Lattice study of QCD at finite chiral density: topology and confinement

被引:12
作者
Astrakhantsev, Nikita [1 ,4 ]
Braguta, V. V. [2 ,3 ,5 ]
Kotov, A. Yu [2 ,5 ,6 ]
Kuznedelev, D. D. [3 ,4 ]
Nikolaev, A. A. [7 ]
机构
[1] Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
[2] Natl Univ Sci & Technol MISIS, Leninsky Prospect 4, Moscow 119049, Russia
[3] Moscow Inst Phys & Technol, Institutsky Lane 9, Dolgoprudnyi 141700, Russia
[4] Inst Theoret & Expt Phys NRC Kurchatov Inst, Moscow 117218, Russia
[5] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
[6] Forschungszentrum Julich, Julich Supercomp Ctr, D-52428 Julich, Germany
[7] Swansea Univ, Coll Sci, Dept Phys, Swansea SA2 8PP, W Glam, Wales
关键词
JONA-LASINIO MODEL; VACUUM;
D O I
10.1140/epja/s10050-020-00326-2
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
In this paper we study the properties of QCD at nonzero chiral density rho(5), which is introduced through chiral chemical potential mu(5). The study is performed within lattice simulation of QCD with dynamical rooted staggered fermions. We first check that rho(5) is generated at nonzero mu(5) and in the chiral limit observe rho(5)similar to Lambda(2)(QCD)mu(5). We also test the possible connection between confinement and topological fluctuations. To this end, we measured the topological susceptibility chi(top) and string tension sigma for various values of mu(5). We observed that string tension grows with mu(5). It seems that topological susceptibility also rises with mu(5), but to state this more reliably the uncertainties should be reduced. We believe that our results indicate possible connection between topological fluctuations and the strength of confinement.
引用
收藏
页数:12
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共 77 条
  • [1] Abramchuk R. A., 2018, THEORY POLYAKOV LINE
  • [2] Dynamical role of Polyakov loops in the QCD thermodynamics
    Agasian, Nikita O.
    Lukashov, Mikhail S.
    Simonov, Yuri A.
    [J]. MODERN PHYSICS LETTERS A, 2016, 31 (37)
  • [3] GLUEBALL MASSES AND STRING TENSION IN LATTICE QCD
    ALBANESE, M
    COSTANTINI, F
    FIORENTINI, G
    FLORE, F
    LOMBARDO, MP
    TRIPICCIONE, R
    BACILIERI, P
    FONTI, L
    GIACOMELLI, P
    REMIDDI, E
    BERNASCHI, M
    CABIBBO, N
    MARINARI, E
    PARISI, G
    SALINA, G
    CABASINO, S
    MARZANO, F
    PAOLUCCI, P
    PETRARCA, S
    RAPUANO, F
    MARCHESINI, P
    RUSACK, R
    [J]. PHYSICS LETTERS B, 1987, 192 (1-2) : 163 - 169
  • [4] Phase diagram of QCD in a magnetic field
    Andersen, Jens O.
    Naylor, William R.
    Tranberg, Anders
    [J]. REVIEWS OF MODERN PHYSICS, 2016, 88 (02)
  • [5] Nonperturbative quark-gluon thermodynamics at finite density
    Andreichikov, M. A.
    Lukashov, M. S.
    Simonov, Yu. A.
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2018, 33 (08):
  • [6] Asymptotic Freedom in Strong Magnetic Fields
    Andreichikov, M. A.
    Orlovsky, V. D.
    Simonov, Yu A.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 110 (16)
  • [7] Chemical potentials and parity breaking: the Nambu-Jona-Lasinio model
    Andrianov, A. A.
    Espriu, D.
    Planells, X.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2014, 74 (02): : 1 - 11
  • [8] An effective QCD Lagrangian in the presence of an axial chemical potential
    Andrianov, A. A.
    Espriu, D.
    Planells, X.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2013, 73 (01): : 1 - 10
  • [9] Chiral imbalance in QCD
    Andrianov, Alexander
    Andrianov, Vladimir
    Espriu, Domenec
    [J]. XXIII INTERNATIONAL BALDIN SEMINAR ON HIGH ENERGY PHYSICS PROBLEMS RELATIVISTIC NUCLEAR PHYSICS AND QUANTUM CHROMODYNAMICS (BALDIN ISHEPP XXIII), 2017, 138
  • [10] Astrakhantsev N. Yu., 2018, LATTICE STUDY STATIC