Simple QED- and QCD-like models at finite density

In this paper we discuss one-dimensional models reproducing some features of quantum electrodynamics and quantum chromodynamics at nonzero density and temperature. Since a severe sign problem makes a numerical treatment of QED and QCD at high density difficult, such models help to explore various ef...

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Main Authors:	Pawlowski, Jan M., Stamatescu, Ion-Olimpiu, Zielinski, Christian
Other Authors:	School of Physical and Mathematical Sciences
Format:	Article
Language:	English
Published:	2015
Online Access:	https://hdl.handle.net/10356/81129 http://hdl.handle.net/10220/39136
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Institution:	Nanyang Technological University
Language:	English

id	sg-ntu-dr.10356-81129
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spelling	sg-ntu-dr.10356-811292023-02-28T19:29:27Z Simple QED- and QCD-like models at finite density Pawlowski, Jan M. Stamatescu, Ion-Olimpiu Zielinski, Christian School of Physical and Mathematical Sciences In this paper we discuss one-dimensional models reproducing some features of quantum electrodynamics and quantum chromodynamics at nonzero density and temperature. Since a severe sign problem makes a numerical treatment of QED and QCD at high density difficult, such models help to explore various effects peculiar to the full theory. Studying them gives insights into the large density behavior of the Polyakov loop by taking both bosonic and fermionic degrees of freedom into account, although in one dimension only the implementation of a global gauge symmetry is possible. For these models we evaluate the respective partition functions and discuss several observables as well as the Silver Blaze phenomenon. Published version 2015-12-17T07:18:18Z 2019-12-06T14:22:03Z 2015-12-17T07:18:18Z 2019-12-06T14:22:03Z 2015 Journal Article Pawlowski, J. M., Stamatescu, I.-O., & Zielinski, C. (2015). Simple QED- and QCD-like models at finite density. Physical Review D, 92, 014508-. 1550-7998 https://hdl.handle.net/10356/81129 http://hdl.handle.net/10220/39136 10.1103/PhysRevD.92.014508 en Physical Review D © 2015 American Physical Society. This paper was published in Physical Review D and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevD.92.014508]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf
institution	Nanyang Technological University
building	NTU Library
continent	Asia
country	Singapore Singapore
content_provider	NTU Library
collection	DR-NTU
language	English
description	In this paper we discuss one-dimensional models reproducing some features of quantum electrodynamics and quantum chromodynamics at nonzero density and temperature. Since a severe sign problem makes a numerical treatment of QED and QCD at high density difficult, such models help to explore various effects peculiar to the full theory. Studying them gives insights into the large density behavior of the Polyakov loop by taking both bosonic and fermionic degrees of freedom into account, although in one dimension only the implementation of a global gauge symmetry is possible. For these models we evaluate the respective partition functions and discuss several observables as well as the Silver Blaze phenomenon.
author2	School of Physical and Mathematical Sciences
author_facet	School of Physical and Mathematical Sciences Pawlowski, Jan M. Stamatescu, Ion-Olimpiu Zielinski, Christian
format	Article
author	Pawlowski, Jan M. Stamatescu, Ion-Olimpiu Zielinski, Christian
spellingShingle	Pawlowski, Jan M. Stamatescu, Ion-Olimpiu Zielinski, Christian Simple QED- and QCD-like models at finite density
author_sort	Pawlowski, Jan M.
title	Simple QED- and QCD-like models at finite density
title_short	Simple QED- and QCD-like models at finite density
title_full	Simple QED- and QCD-like models at finite density
title_fullStr	Simple QED- and QCD-like models at finite density
title_full_unstemmed	Simple QED- and QCD-like models at finite density
title_sort	simple qed- and qcd-like models at finite density
publishDate	2015
url	https://hdl.handle.net/10356/81129 http://hdl.handle.net/10220/39136
_version_	1759857744564715520

Simple QED- and QCD-like models at finite density

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