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Author : Markus Hofmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (118 download)
Download or read book Nonequilibrium Dynamics of a Hadronizing Quark Gluon Plasma written by Markus Hofmann and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (684 download)
Download or read book Nonequilibrium Dynamics of the Quark-gluon Plasma in Heavy Ion Collisions written by and published by . This book was released on 1997 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). We have developed field theory and numerical methods for the general problem of quantum back reaction on classical fields, with applications to a wide variety of physical systems. Our main focus was on particle production processes in the time evolution of the quark-gluon plasma following an ultrarelativistic heavy-ion collision. In particular, we studied in some detail the evolution of a disoriented chiral condensate (DCC) produced in the chiral phase transition of nuclear matter in heavy-ion collision experiments. We have also studied dissipation and decoherence as a result of particle production in time-varying mean fields. Numerical codes previously developed for particle production in strong electric fields in quantum electrodynamics (QED) have been modified for the quantum chromodynamics (QCD) problem. We have made specific predictions for energy-momentum flow and pion production in the central rapidity region of experiments to be performed at the Relativistic Heavy-Ion Collider (RHIC).
Author : Jean Letessier
Publisher : Cambridge University Press
ISBN 13 : 1009290703
Total Pages : 415 pages
Book Rating : 4.0/5 (92 download)
Download or read book Hadrons and Quark–Gluon Plasma written by Jean Letessier and published by Cambridge University Press. This book was released on 2023-01-31 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2002 monograph, now reissued as OA, explores the primordial state of hadronic matter called quark-gluon plasma.
Author : J. Kapusta
Publisher : Gulf Professional Publishing
ISBN 13 : 9780444511102
Total Pages : 850 pages
Book Rating : 4.5/5 (111 download)
Download or read book Quark-Gluon Plasma: Theoretical Foundations written by J. Kapusta and published by Gulf Professional Publishing. This book was released on 2003-11-25 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this volume is to trace the development of the theoretical understanding of quark-gluon plasma, both in terms of the equation of state and thermal correlation functions and in terms of its manifestation in high energy nuclear collisions. Who among us has not wondered how tall a mountain is on a neutron star, what happens when matter is heated and compressed to higher and higher densities, what happens when an object falls into a black hole, or what happened eons ago in the early universe? The study of quark-gluon plasma is related in one way or another to these and other thought provoking questions. Oftentimes the most eloquent exposition is given in the original papers. To this end a selection is made of what are the most important pioneering papers in this field. The early 1950s was an era when high energy multiparticle production in cosmic ray interactions attracted the attention of some of the brightest minds in physics, and so it should be no surprise that the first reprinted papers deal with the introduction of statistical models of particle production. The quark model arose in the 1960s, while QCD as such was recognized as the theory of the strong interactions in the 1970's. The behavior of matter at high temperatures and supranuclear densities became of wide interest in the nuclear and particle physics communities starting in the 1970s, which is when the concept of quark-gluon plasma became established. The history of the field has been traced up to the early 1990s. There are three reasons for stopping at that point in time. First, most of the key theoretical concepts and formalisms arose before 1993, although many of them continue to be developed today and hopefully well into the future. Second, papers written after 1992 are much more readily available than those writen before due to the advent of the World Wide Web and its electronic preprint databases and journals. Finally, in making this collection of reprints available as hardcopy one is limited in the number of pages, and some papers in the present selection should have been deleted in order to make room for post-1993 papers. For the same reason the subject focus must of necessity be limited, which means that in this reprint collection two wide subject areas are not addressed: the behavior of nuclear matter under extreme conditions is not reported, nor is quark matter in neutron stars. The broad categories into which the material has been placed, reflect the diverse studies of quark-gluon plasma and its manifestation. They are: phase-space models of particle production, perturbative QCD plasma, lattice gauge theory, fluid dynamics and flow, strangeness, heavy flavor (charm), electromagnetic signals, parton cascade and minijets, parton energy loss and jet quenching, Hanbury Brown--Twiss (HBT) interferometry, disoriented chiral condensates, phase transition dynamics and cosmology, and color superconductivity. Each chapter is prefaced by an introduction, which contains a list of significant papers which is more complete than the reprinted papers, though by no means exhaustive. It also contains citations to most relevant papers published up to the date of completion of this volume (fall 2002). It is hoped that the short reviews will help bring the reader up to date on the latest developments. The selection of papers cited in each chapter, and in particular the ones selected for reprinting, is solely the responsibility of the Editors. It is based on their best judgement and experience in this field dating back to the mid-1970s. In order to be reprinted a paper must have been pioneering in the sense of originality and impact on the field. Generally they have been cited over a hundred times by other papers published in refereed journals. The final selection was reviewed and discussed among the Editors repeatedly. Just because a paper is not included does not mean they do not know of it or do not have a high regard for it. All of the papers cited or reprinted are original research contributions. There are three other types of publications listed. The first is a compilation of books. The second is a list of reviews, many of which contain a significant amount of original material. The third is a list of the proceedings of the series of Quark Matter meetings, the primary series of international conferences in this field that is attended by both theorists and experimentalists.
Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (684 download)
Download or read book Non-equilibrium QCD of High-energy Multi-gluon Dynamics written by and published by . This book was released on 1996 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A non-equilibrium QCD description of multiparticle dynamics in space-time is of both fundamental and phenomenological interest. Here the authors discusses an attempt to derive from first principles, a real-time formalism to study the dynamical interplay of quantum and statistical-kinetic properties of non-equilibrium multi-parton systems produced in high-energy QCD processes. The ultimate goal (from which one is still far away) is to have a practically applicable description of the space-time evolution of a general initial system of gluons and quarks, characterized by some large energy or momentum scale, that expands, diffuses and dissipates according to the self- and mutual-interactions, and eventually converts dynamically into final state hadrons. For example, the evolution of parton showers in the mechanism of parton-hadron conversion in high-energy hadronic collisions, or, the description of formation, evolution and freezeout of a quark-gluon plasma, in ultra-relativistic heavy-ion collisions.
Author : Dekrayat K. Almaalol
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Non-equilibrium Hydrodynamics of the Quark-Gluon Plasma, from Theory to Phenomenology written by Dekrayat K. Almaalol and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quark-gluon plasma (QGP) is a deconfined phase of strongly interacting matter which can be described by the theory of quantum chromodynamics (QCD). The QGP filled the entire universe in the early moments after the big bang and is believed to exist in the present time in the core of massive neutron stars. Understanding the physical properties of QGP and its non-equilibrium dynamics requires solving the full non-perturbative QCD equations of motion, which is an unsolved problem at this time. Ultra-relativistic heavy ion collisions (URHICs) can be used to reproduce the extreme conditions of the early universe and create a short-lived QGP in the laboratory; in what is called the ``little'' bang. The highly momentum-anisotropic far-from-equilibrium initial state created in these experiments evolves dynamically in three main stages: pre-equilibrium ([tau] 0.5 fm/c), thermalization/hydrodynamization ([tau] 0.5-2 fm/c), and finally freeze-out/hadronization ([tau]> 10 fm/c), where 1fm/c = 3x10^(-24) s. Each of these stages span a different regime of physics, with different relevant degrees of freedom and, therefore, are described by different theoretical models, such as QCD kinetic theory, dissipative hydrodynamics, and hadronic kinetic theory. This dissertation considers the impact of all three of these stages on our understanding of the QGP generated in URHICs, with the focus on better understanding the non-equilibrium dynamics of the QGP, its path to equilibrium and the effect such non-equilibrium dynamics have on our ability to extract fundamental information about the QGP. This dissertation also provides theoretical insights into how to improve URHIC simulations by examining the impact of non-equilibrium corrections present during different stages of QGP evolution.
Author : Babak Salehi Kasmaei
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Nonequilibrium Probes of the Quark-gluon Plasma written by Babak Salehi Kasmaei and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of high-energy nuclear physics is to understand the dynamics and properties of the various forms and phases of the strongly-interacting matter. Heavy-ion collision experiments are performed to deposit a large energy density in a very small volume of space and generate a form of extremely hot matter called the quark-gluon plasma (QGP). The behavior of the generated matter shows signatures of collectivity allowing phenomenological models based on statistical or fluid dynamical descriptions to be used successfully to analyze the outcomes the experiments. However, the very short lifetime and the extreme conditions of the QGP call for the construction of theoretical models based on the physics of nonequilibrium systems.Understanding the properties of QGP requires the study of collective excitations in the emergent many-body dynamics of the quarks and gluons as the fundamental objects in the theory of quantum chromodynamics. In this dissertation, the collective excitations of the nonequilibrium QGP are studied by calculating the quark and gluon self-energies within the hard loop effective theory. By extracting the solutions of the gluon dispersion relation in the complex plane, the presence of unstable modes in the momentum-anisotropic QGP is studied. The quark self-energy is also used to calculate the rate of photon emission from QGP in the subsequent studies performed as part of this dissertation. Electromagnetic probes (photons and dileptons) are considered among the best observables for extracting information about the early stages of evolution of the strongly interacting matter produced in heavy-ion collisions. In contrast to the hadrons, the emitted photons and leptons are not distorted by a strong coupling to the medium and they can escape the system with much larger mean free paths. Since the dilepton and photon emission rates from QGP are directly affected by the momentum distribution of the partonic degrees of freedom, their emission patterns can provide information about the nonequilibrium features of the system such as the momentum anisotropy of the distributions. In this dissertation, the effects of momentum anisotropy on the yields and elliptic flow coefficients of the dileptons and photons from QGP are investigated. The emission rates are calculated for distributions featuring ellipsoidal momentum anisotropies, and then the rates are convolved with the space-time evolution of the system using a relativistic hydrodynamical model. The effects of various parameters on the results are studied. In particular, the results are interpreted considering their connections to the extraction of early dynamics of QGP from future experimental data. Another important class of the probes of the nonequilibrium QGP is related to the dynamics of the heavy quarks in the system and their bound states. The properties of the heavy bound states, such as their decay rates, are affected by the hot and dense strongly interacting medium. Heavy quarks, due to their longer relaxation times, are also used to probe the transport properties of the QGP perturbed out of equilibrium. The potential for a bound state inside a hot medium may acquire an imaginary part. In this dissertation, the imaginary part of the heavy quark potential is calculated using classical-statistical simulations of the Yang-Mills theory on lattice. The connection of the results to the momentum diffusion of the heavy quarks is discussed. Lattice computation for the real-time dynamics of the non-Abelian theories allows for the nonperturbative analysis of the systems in and out of equilibrium.
Author : Nopoush Mohammad
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Non-equilibrium Hydrodynamics of the Quark-gluon Plasma written by Nopoush Mohammad and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relativistic heavy-ion collision experiments are currently the only controlled way to generate and study matter in the most extreme temperatures (T ~10e+12 K). At these temperatures matter undergoes a phase transition to an exotic phase of matter called the quark-gluon plasma (QGP). The QGP is an extremely hot and deconfined phase of matter where sub-nucleonic constituents (quarks and gluons) are asymptotically free. The QGP phase is important for different reasons. First of all, our universe existed in this phase up to approximately t ~10e-5 s after the Big Bang, before it cools down sufficiently to form any kind of quark bound states. In this regard, studying the QGP provides us with useful information about the dynamics and evolution of the early universe. Secondly, high-energy collisions serve as a microscope with a resolution on the order of 10e-15 m (several orders of magnitude more powerful than the best ever developed electron microscopes). With this fantastic probe, penetrating into the detailed structure of nucleons, and the discovery of new particles and fundamental phases are made possible. The dynamics of the QGP is based on quantum chromodynamics (which governs the interactions of quarks and gluons) and the associated force is "strong force". The strong collective behaviors observed experimentally inspired people to use dissipative fluid dynamics to model the dynamics of the medium. The QGP produced in heavy-ion collisions, experiences strong longitudinal expansion at early times which leads to a large momentum-space anisotropy in the local rest frame distribution function. The rapid longitudinal expansion casts doubt on the application of standard viscous hydrodynamics (vHydro) models, which lead to unphysical predictions such as negative pressure, negative one-particle distribution function, and so on. Anisotropic hydrodynamics (aHydro) takes into account the strong momentum-space anisotropy in the leading order distribution function in a consistent and systematic way. My dissertation is about the formulation and application of anisotropic hydrodynamics as a successful non-equilibrium hydrodynamics model for studying the QGP. For this purpose, I introduce the basic conformal anisotropic hydrodynamics formalism and then explain the ways we included realistic features (bulk degree of freedom, quasiparticle implementation of realistic equation of state, more realistic collisional kernel), to make it a suitable hydrodynamics model for studying the QGP generated in heavy-ion collisions. For verification of our model we have compared the evolution of model parameters predicted by aHydro and vHydro, with exact analytical solution of the Boltzmann equation. For this purpose, we have studied the evolution of the system under conformal Gubser flow using the aHydro model. By transforming to de Sitter spacetime (a non-trivial curved coordinate system) we simplified the dynamics to 0+1d spacetime. Comparisons with exact solutions show that aHydro better reproduces the exact solutions than the best available vHydro models. However, the system is not conformal and the aHydro needed to be improved to include a realistic prescription for the equation of state which takes care of non-ideal effect in the dynamics. In the framework of finite temperature eld theory the equation of state is provided by numerical calculation of QCD partition function using lattice QCD (LQCD), whereas, devising an equation of state for aHydro model is challenging because therein we deal with anisotropic pressures. In the next step of my research, we have designed a novel method for implementing the realistic equation of state (provided by lattice QCD) in the aHydro formalism. This model, called the quasiparticle aHydro model, integrates the non-conformal effects in the aHydro model. The non-conformal effects are due to strong interactions of plasma constituents which leads to temperature-dependence of the particles' effective mass in the system. Based on the quasiparticle picture, we have developed the quasiparticle aHydro (aHydroQP) model which has all necessary components for studying the phenomenology of the QGP created in heavy-ion collisions. We have then compared the phenomenological predictions of the aHydroQP model with experimental observations. Comparisons illustrate a high level of consistency between our model and the experimental data. The last two chapters are about two applications of the aHydro model to field-theoretical measurables in the QGP. In these chapters, we have calculated the quark self-energy in an anisotropic QGP. The quark self-energy is important because it encodes the way quarks gain interactional mass while in the hot QGP. I also have presented the calculation of gluon self-energy in hard loop approximation in an anisotropic QGP.The gluon self-energy is important since it is related to heavy-quark potential and heavy quarkonium suppression. Heavy quarkonia bound states, besides theoretical importance, serve as a thermometer for the QGP.
Author : Rudolph C. Hwa
Publisher : World Scientific
ISBN 13 : 9812795537
Total Pages : 786 pages
Book Rating : 4.8/5 (127 download)
Download or read book Quark--Gluon Plasma 3 written by Rudolph C. Hwa and published by World Scientific. This book was released on 2004 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation. Text reviews the major topics in Quark-Gluon Plasma, including: the QCD phase diagram, the transition temperature, equation of state, heavy quark free energies, and thermal modifications of hadron properties. Includes index, references, and appendix. For researchers and practitioners.
Author : S. C. Phatak
Publisher :
ISBN 13 : 9788173199578
Total Pages : 0 pages
Book Rating : 4.1/5 (995 download)
Download or read book Quark Gluon Plasma and Hadron Physics written by S. C. Phatak and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quark Gluon Plasma and Hadron Physics presents a series of review articles on the current research areas in high energy nuclear physics involving theoretical and experimental aspects of quark gluon plasma and the physics of early universe. The topics covered are Field Theory, Basic QCD, High PT Processes (Jets, deep inelastic structure functions), Lattice QCD, Hydrodynamic Evolution, Hadron and QGP phenomenology, Hadrons in medium and Error analysis and simulation.
Author : M. V. Tokarchuk
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (246 download)
Download or read book The Consistent Description of Kinetics and Hydrodynamics of Quark-gluon Plasma on the Basis of Nonequilibrium Thermofield Dynamics written by M. V. Tokarchuk and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jean Letessier
Publisher : Cambridge University Press
ISBN 13 : 1139433032
Total Pages : 417 pages
Book Rating : 4.1/5 (394 download)
Download or read book Hadrons and Quark–Gluon Plasma written by Jean Letessier and published by Cambridge University Press. This book was released on 2002-05-30 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an accessible introduction to the rapidly expanding field of hadronic interactions and the quark–gluon plasma. Covering the basics as well as more advanced material, it is ideal for graduate students as well as researchers already working in this and related fields.
Author : Rudolph C. Hwa
Publisher : World Scientific
ISBN 13 : 9814293288
Total Pages : 450 pages
Book Rating : 4.8/5 (142 download)
Download or read book Quark-gluon Plasma 4 written by Rudolph C. Hwa and published by World Scientific. This book was released on 2010 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a review volume containing articles written by experts on current theoretical topics in the subject of Quark-Gluon Plasma created in heavy-ion collisions at high energy. It is the fourth volume in the series with the same title sequenced numerically. The articles are written in a pedagogical style so that they can be helpful to a wide range of researchers from graduate students to mature physicists who have not worked previously on the subject. A reader should be able to learn from the reviews without having extensive knowledge of the background literature.
Author : Sourav Sarkar
Publisher : Springer Science & Business Media
ISBN 13 : 3642022855
Total Pages : 374 pages
Book Rating : 4.6/5 (42 download)
Download or read book The Physics of the Quark-Gluon Plasma written by Sourav Sarkar and published by Springer Science & Business Media. This book was released on 2009-12-16 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to offer to the next generation of young researchers a broad and largely self-contained introduction to the physics of heavy ion collisions and the quark-gluon plasma, providing material beyond that normally found in the available textbooks. For each of the main aspects - QCD thermodynamics and global features of the QGP, collision hydrodynamics, electromagnetic probes, jet and quarkonium production, color glass condensate, and the gravity connection - the present volume provides extensive and pedagogical lectures, surveying the present status of both theory and experiment. A particular feature of this volume is that all lectures have been written with the active assistance of selected students present at the course in order to ensure the adequate level and coverage for the intended readership.
Author : Li Yi
Publisher : Springer
ISBN 13 : 1493964879
Total Pages : 97 pages
Book Rating : 4.4/5 (939 download)
Download or read book Study of Quark Gluon Plasma By Particle Correlations in Heavy Ion Collisions written by Li Yi and published by Springer. This book was released on 2016-08-25 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis covers several important topics relevant to our understanding of quark-gluon plasma. It describes measurement of the third-order harmonic flow using two-particle correlations and isolation of flow and non-flow contributions to particle correlations in gold-gold collisions. The work also investigates long-range longitudinal correlations in small systems of deuteron-gold collisions. The former is related to the hydrodynamic transport properties of the quark-gluon plasma created in gold-gold collisions. The latter pertains to the question whether hydrodynamics is applicable to small systems, such as deuteron-gold collisions, and whether the quark-gluon plasma can be formed in those small-system collisions. The work presented in this thesis was conducted with the STAR experiment at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, where the center-of-mass energy of both collision systems was a factor of 100 larger than the rest mass of the colliding nuclei. The results contained in this thesis are highly relevant to our quest for deeper understanding of quantum chromodynamics. The results obtained challenge the interpretation of previous works from several other experiments on small systems, and provoke a fresh look at the physics of hydrodynamics and particle correlations pertinent to high energy nuclear collisions.
Author : Jean-François Paquet
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (973 download)
Download or read book Characterizing the Non-equilibrium Quark-gluon Plasma with Photons and Hadrons written by Jean-François Paquet and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Heavy ion collisions can be used to study the properties of nuclear matter in extreme conditions. These events concentrate enough energy in a small volume to melt the colliding nuclei into a plasma of quarks and gluons. This plasma appears to achieve near local thermal equilibrium during its very short lifetime, allowing for its long scale properties to be investigated with hydrodynamics. In this thesis, the production of hadrons and photons in heavy ion collisions is studied using a sophisticated hydrodynamical model that includes realistic initial conditions, hydrodynamical equations with both shear and bulk viscosities, along with an appropriate treatment of final state hadronic rescatterings. A wide range of hadronic observables, measured at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC), are shown to be described well by this model, and bulk viscosity is found to be essential to this level of agreement with data. Building on this successful model, direct photon production in heavy ion collisions is studied. The effect on photon emission of the emitting medium's viscosity is investigated, and the method for evaluating direct photon momentum anisotropies for comparisons with experimental measurements is clarified. Both the direct photon spectrum and momentum anisotropy are shown to be within or slightly below the uncertainties of available experimental measurements." --
Author : Rudolph C. Hwa
Publisher : World Scientific
ISBN 13 : 9789810223991
Total Pages : 796 pages
Book Rating : 4.2/5 (239 download)
Download or read book Quark-Gluon Plasma 2 written by Rudolph C. Hwa and published by World Scientific. This book was released on 1995 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a sequel to the review volume Quark-Gluon Plasma. There are 13 articles contributed by leading investigators in the field, covering a wide range of topics about the theoretical approach to the subject. These contributions are timely reviews of nearly all the actively pursued problems, written in a pedagogical style suitable for beginners as well as experienced researchers.
