Chiral Magnetic Spirals

被引:70
作者
Basar, Goekce E. [1 ]
Dunne, Gerald V. [1 ]
Kharzeev, Dmitri E. [2 ]
机构
[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
[2] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
关键词
HEAVY-ION COLLISIONS; PARITY VIOLATION; HOT QCD; FIELD;
D O I
10.1103/PhysRevLett.104.232301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We argue that the presence of a very strong magnetic field in the chirally broken phase induces inhomogeneous expectation values, of a spiral nature along the magnetic field axis, for the currents of charge and chirality, when there is finite baryon density or an imbalance between left and right chiralities. This "chiral magnetic spiral" is a gapless excitation transporting the currents of (i) charge (at finite chirality), and (ii) chirality (at finite baryon density) along the direction of the magnetic field. In both cases it also induces in the transverse directions oscillating currents of charge and chirality. In heavy ion collisions, the chiral magnetic spiral possibly provides contributions both to the out-of-plane and the in-plane dynamical charge fluctuations recently observed at BNL RHIC.
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页数:4
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