ITP OpenIR  > 理论物理所2016年知识产出
Quark mass effect on axial charge dynamics
Guo, ED; Lin, S; Guo, ED (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Lin, S (reprint author), Sun Yat Sen Univ, Inst Astron & Space Sci, 135 Xingang Xi Rd, Guangzhou 510275, Guangdong, Peoples R China.; Guo, ED (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China.
2016
发表期刊PHYSICAL REVIEW D
卷号93期号:10页码:105001
文章类型Article
摘要We studied the effect of finite quark mass on the dynamics of the axial charge using the D3/D7 model in holography. The mass term in the axial anomaly equation affects both the fluctuation (generation) and dissipation of the axial charge. We studied the dependence of the effect on quark mass and an external magnetic field. For axial charge generation, we calculated the mass diffusion rate, which characterizes the helicity flipping rate. The rate is a nonmonotonous function of mass and can be significantly enhanced by the magnetic field. The diffusive behavior is also related to a divergent susceptibility of the axial charge. For axial charge dissipation, we found that in the long time limit, the mass term dissipates all the charge effectively generated by parallel electric and magnetic fields. The result is consistent with a relaxation time approximation. The rate of dissipation through mass term is a monotonous increasing function of both quark mass and a magnetic field.
学科领域Astronomy & Astrophysics ; Physics
资助者Sun Yat-Sen University ; Sun Yat-Sen University ; Sun Yat-Sen University ; Sun Yat-Sen University
DOIhttp://dx.doi.org/10.1103/PhysRevD.93.105001
关键词[WOS]HEAVY-ION COLLISIONS ; VIOLATION ; QCD
收录类别SCI
语种英语
资助者Sun Yat-Sen University ; Sun Yat-Sen University ; Sun Yat-Sen University ; Sun Yat-Sen University
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21668
专题理论物理所2016年知识产出
通讯作者Guo, ED (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Lin, S (reprint author), Sun Yat Sen Univ, Inst Astron & Space Sci, 135 Xingang Xi Rd, Guangzhou 510275, Guangdong, Peoples R China.; Guo, ED (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China.
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Guo, ED,Lin, S,Guo, ED ,et al. Quark mass effect on axial charge dynamics[J]. PHYSICAL REVIEW D,2016,93(10):105001.
APA Guo, ED,Lin, S,Guo, ED ,Lin, S ,&Guo, ED .(2016).Quark mass effect on axial charge dynamics.PHYSICAL REVIEW D,93(10),105001.
MLA Guo, ED,et al."Quark mass effect on axial charge dynamics".PHYSICAL REVIEW D 93.10(2016):105001.
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