期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP04(2020)162
关键词
Resummation; Quark-Gluon Plasma; Perturbative QCD
资金
- ExtreMe Matter Institute EMMI at the GSI Helmholtzzentrum fur Schwerionenphysik, Darmstadt, Germany
- Japan Society for the Promotion of Science (JSPS) KAKENHI Grant [16K17716, 17H06462, 18H01211]
We show detailed derivation of the electric conductivity of quark matter at finite temperature and density under a magnetic field. We especially focus on the longitudinal electric conductivity along the magnetic direction and establish the field-theoretical description of the negative magnetoresistance as observed in chiral materials. With increasing magnetic field our microscopic calculation leads to changing behavior from approximately quadratic to asymptotically linear dependence of the electric conductivity, while the magnetic dependence is quadratic in the conventional relaxation time approximation. The presented formulation founds a firm basis for the physical interpretation of the negative magnetoresistance in terms of the particle and the hydrodynamic contributions, as well as it offers general methodology applicable for various transport coefficients.
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