The QCD equation of state at high temperature and small density from the lattice

Miao C (2008)
Bielefeld (Germany): Bielefeld University.

Bielefelder E-Dissertation | Englisch
 
Download
OA
Autor*in
Miao, Chuan
Gutachter*in / Betreuer*in
Abstract / Bemerkung
In this thesis we have analyzed bulk thermodynamic properties of QCD at high temperature and small but non-vanishing baryon density on lattices. We have used the integration method to calculate the pressure at zero chemical potentials. The thermodynamic quantities are normalized such that they vanish at zero temperature. The zero temperature calculations are thus needed for both calibrating the lattices and the subtraction procedure for the normalizations. In this study, we have scanned a wide range of temperature and constructed a line of constant physics, on which the strange pseudo-scalar meson mass and kaon mass are kept at their physical values and the light pseudo-scalar meson mass is about 220 MeV. Our calculations are mostly carried out on lattices with cut-offs a = 1/4T and 1/6T, where T is the system temperature. All thermodynamic quantities, such as pressure, energy density as well as energy-momentum trace anomaly, show small cut-off effects. We have also calculated the trace anomaly at high temperatures on N = 8 lattices to check that the lattice cut-off effects are under control. In order to study the QCD thermodynamics at small chemical potentials, we have used the Taylor expansion method. The pressure is expanded in terms of quark chemical potentials and the expansion coefficients at zero chemical potentials are calculated up to the fourth order on both N = 4 and 6 lattices. Using these coefficients thermodynamic quantities, e.g. pressure and number densities, have been constructed and shown.
Stichworte
Quantenchromodynamik; Zustandsgleichung; Gittereichtheorie; Quark-Gluon-Plasma; Quantum chromodynamics (QCD); Equation of state; Lattice gauge theory; Quark-gluon plasma
Jahr
2008
Page URI
https://pub.uni-bielefeld.de/record/2302119

Zitieren

Miao C. The QCD equation of state at high temperature and small density from the lattice. Bielefeld (Germany): Bielefeld University; 2008.
Miao, C. (2008). The QCD equation of state at high temperature and small density from the lattice. Bielefeld (Germany): Bielefeld University.
Miao, Chuan. 2008. The QCD equation of state at high temperature and small density from the lattice. Bielefeld (Germany): Bielefeld University.
Miao, C. (2008). The QCD equation of state at high temperature and small density from the lattice. Bielefeld (Germany): Bielefeld University.
Miao, C., 2008. The QCD equation of state at high temperature and small density from the lattice, Bielefeld (Germany): Bielefeld University.
C. Miao, The QCD equation of state at high temperature and small density from the lattice, Bielefeld (Germany): Bielefeld University, 2008.
Miao, C.: The QCD equation of state at high temperature and small density from the lattice. Bielefeld University, Bielefeld (Germany) (2008).
Miao, Chuan. The QCD equation of state at high temperature and small density from the lattice. Bielefeld (Germany): Bielefeld University, 2008.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
Dieses Objekt ist durch das Urheberrecht und/oder verwandte Schutzrechte geschützt. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2019-09-25T06:23:27Z
MD5 Prüfsumme
ba6f540742670f4a604fd14d0a6bf2b1


Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Suchen in

Google Scholar