Long-Range Magnetic Fields in the Ground State of the Standard Model Plasma

被引：62

作者：

Boyarsky, Alexey ^{[1
,2
,3
]}

Ruchayskiy, Oleg ^{[4
]}

Shaposhnikov, Mikhail ^{[2
]}

机构：

[1] Leiden Univ, Inst Lorentz Theoret Phys, Leiden, Netherlands

[2] Ecole Polytech Fed Lausanne, FSB ITP LPPC, CH-1015 Lausanne, Switzerland

[3] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] CERN Phys Dept, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 11期

基金：

瑞士国家科学基金会;

关键词：

CHERN-SIMONS TERMS; FINITE-TEMPERATURE; ELECTROWEAK THEORY; EQUILIBRIUM; THEOREM; BARYON;

D O I：

10.1103/PhysRevLett.109.111602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In thermal equilibrium the ground state of the plasma of Standard Model particles is determined by temperature and exactly conserved combinations of baryon and lepton numbers. We show that at nonzero values of the global charges a translation invariant and homogeneous state of the plasma becomes unstable and the system transits into a new equilibrium state, containing a large-scale magnetic field. The origin of this effect is the parity-breaking character of weak interactions and chiral anomaly. This situation could occur in the early Universe and may play an important role in its subsequent evolution.

引用

页数：5

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