Conjectures about the Chiral Phase Transition in QCD from Anomalous Multi-Instanton Interactions

被引：6

作者：

Pisarski, Robert D. ^{[1
]}

Rennecke, Fabian ^{[2
,3
]}

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Justus Liebig Univ Giessen, Inst Appl Phys, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[3] Helmholtz Res Acad Hesse FAIR HFHF, Campus Giessen, Giessen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 25期

关键词：

HIGH-TEMPERATURE PHASE; QUANTUM CHROMODYNAMICS; SYMMETRY; RESTORATION; INSTANTONS; ORDER; MODEL;

D O I：

10.1103/PhysRevLett.132.251903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

To date numerical simulations of lattice QCD have not found a chiral phase transition of first order that is expected to occur for sufficiently light pions. We show how the restoration of an exact global chiral symmetry can strongly decrease the breaking of the approximate, anomalous UA(1) symmetry. This is testable on the lattice through simulations for one through four flavors. In QCD a small breaking of the UA(1) symmetry in the chirally symmetric phase generates novel experimental signals.

引用

页数：8

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