Strong coupling methods in QCD thermodynamics

  • For a long time, strong coupling expansions have not been applied systematically in lattice QCD thermodynamics, in view of the success of numerical Monte Carlo studies. The persistent sign problem at finite baryo-chemical potential, however, has motivated investigations using these methods, either by themselves or combined with numerical evaluations, as a route to finite density physics. This article reviews the strategies, by which a number of qualitative insights have been attained, notably the emergence of the hadron resonance gas or the identification of the onset transition to baryon matter in specific regions of the QCD parameter space. For the simpler case of Yang–Mills theory, the deconfinement transition can be determined quantitatively even in the scaling region, showing possible prospects for continuum physics.
Author:Owe PhilipsenORCiDGND
Parent Title (English):Indian journal of physics
Publisher:Springer India
Place of publication:New Delhi
Document Type:Article
Date of Publication (online):2021/07/24
Date of first Publication:2021/07/24
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/06/01
Tag:Finite baryon density; Lattice QCD; Strong coupling expansion
Page Number:13
First Page:1599
Last Page:1611
Part of the work reported here was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – project number 315477589 – TRR 211. Open Access funding enabled and organized by Projekt DEAL.
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0