Effects of dense quark matter on gluon propagators in lattice QC2D

Bornyakov, V. G.; Braguta, V. V.; Nikolaev, Aleksandr; Rogalyov, R. N.

doi:10.1103/physrevd.102.114511

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Effects of dense quark matter on gluon propagators in lattice QC2D

V. G. Bornyakov, V. V. Braguta, Aleksandr Nikolaev

, R. N. Rogalyov

Physical Review D, Volume: 102, Issue: 11

Swansea University Author: Aleksandr Nikolaev

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DOI (Published version): 10.1103/physrevd.102.114511

Abstract

The transverse and longitudinal gluon propagators in the Landau gauge are studied in the two-color lattice QCD at nonzero quark chemical potential μq. Parametrization of the momentum dependence of the propagators is provided for all values of chemical potential under study. We find that the longitud...

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Published in:	Physical Review D
ISSN:	2470-0010 2470-0029
Published:	American Physical Society (APS) 2020
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URI:	https://cronfa.swan.ac.uk/Record/cronfa57545
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spelling	2021-09-08T13:56:25.3672186 v2 57545 2021-08-06 Effects of dense quark matter on gluon propagators in lattice QC2D dd83cd35ab11fa349b41d3bfb896a7a7 0000-0001-9267-1968 Aleksandr Nikolaev Aleksandr Nikolaev true false 2021-08-06 SPH The transverse and longitudinal gluon propagators in the Landau gauge are studied in the two-color lattice QCD at nonzero quark chemical potential μq. Parametrization of the momentum dependence of the propagators is provided for all values of chemical potential under study. We find that the longitudinal propagator is infrared suppressed at nonzero μq with suppression increasing with increasing μq. The transverse propagator dependence on μq was found to be opposite: it is enhanced at large μq. It is found, respectively, that the electric screening mass is increasing while the magnetic screening mass is decreasing with increasing μq. Nice agreement between the electric screening mass computed from the longitudinal propagator and the Debye mass computed earlier from the singlet static quark-antiquark potential was found. We discuss how the dependence of the propagators on the chemical potential correlates with the respective dependence of the string tension. Additionally, we consider the difference between two propagators as a function of the momentum and make interesting observations. Journal Article Physical Review D 102 11 American Physical Society (APS) 2470-0010 2470-0029 18 12 2020 2020-12-18 10.1103/physrevd.102.114511 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Other The work was completed due to support of the Russian Foundation for Basic Research via Grant No. 18-02-40130 mega. V. V. B. acknowledges the support from the BASIS foundation. A. A. N. acknowledges the support from STFC via Grant No. ST/P00055X/1. 2021-09-08T13:56:25.3672186 2021-08-06T09:47:54.6437404 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics V. G. Bornyakov 1 V. V. Braguta 2 Aleksandr Nikolaev 0000-0001-9267-1968 3 R. N. Rogalyov 4 57545__20567__dfa5ed3cd7ab446786967650b9e1dc3f.pdf 57545.pdf 2021-08-06T09:51:12.8182672 Output 460496 application/pdf Version of Record true Released under the terms of the Creative Commons Attribution 4.0 International license true eng https://creativecommons.org/licenses/by/4.0/
title	Effects of dense quark matter on gluon propagators in lattice QC2D
spellingShingle	Effects of dense quark matter on gluon propagators in lattice QC2D Aleksandr Nikolaev
title_short	Effects of dense quark matter on gluon propagators in lattice QC2D
title_full	Effects of dense quark matter on gluon propagators in lattice QC2D
title_fullStr	Effects of dense quark matter on gluon propagators in lattice QC2D
title_full_unstemmed	Effects of dense quark matter on gluon propagators in lattice QC2D
title_sort	Effects of dense quark matter on gluon propagators in lattice QC2D
author_id_str_mv	dd83cd35ab11fa349b41d3bfb896a7a7
author_id_fullname_str_mv	dd83cd35ab11fa349b41d3bfb896a7a7_***_Aleksandr Nikolaev
author	Aleksandr Nikolaev
author2	V. G. Bornyakov V. V. Braguta Aleksandr Nikolaev R. N. Rogalyov
format	Journal article
container_title	Physical Review D
container_volume	102
container_issue	11
publishDate	2020
institution	Swansea University
issn	2470-0010 2470-0029
doi_str_mv	10.1103/physrevd.102.114511
publisher	American Physical Society (APS)
college_str	Faculty of Science and Engineering
hierarchytype
hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str	1
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description	The transverse and longitudinal gluon propagators in the Landau gauge are studied in the two-color lattice QCD at nonzero quark chemical potential μq. Parametrization of the momentum dependence of the propagators is provided for all values of chemical potential under study. We find that the longitudinal propagator is infrared suppressed at nonzero μq with suppression increasing with increasing μq. The transverse propagator dependence on μq was found to be opposite: it is enhanced at large μq. It is found, respectively, that the electric screening mass is increasing while the magnetic screening mass is decreasing with increasing μq. Nice agreement between the electric screening mass computed from the longitudinal propagator and the Debye mass computed earlier from the singlet static quark-antiquark potential was found. We discuss how the dependence of the propagators on the chemical potential correlates with the respective dependence of the string tension. Additionally, we consider the difference between two propagators as a function of the momentum and make interesting observations.
published_date	2020-12-18T04:13:22Z
_version_	1763753908119797760
score	11.01628

Effects of dense quark matter on gluon propagators in lattice QC2D

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