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首页> 外文期刊>Physical review, D >Medium effects on the electrical and Hall conductivities of a hot and magnetized pion gas
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Medium effects on the electrical and Hall conductivities of a hot and magnetized pion gas

机译：对热和磁化沟气体电气和霍尔电导率的中等效应

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摘要

The electrical and Hall conductivities in a uniform magnetic field are evaluated for an interacting pion gas using the kinetic theory approach within the ambit of relaxation time approximation. The in-medium cross sections vis-à-vis the relaxation time for π π scattering are obtained using a one-loop modified thermal propagator for the exchanged ρ and σ mesons using thermal field theoretic techniques. For higher values of the magnetic field, a monotonic increase of the electrical conductivity with the temperature is observed. However, for a given temperature, the conductivity is found to decrease steadily with magnetic field. The?Hall conductivity, at lower values of the magnetic field, is found to decrease with the temperature more rapidly than the electrical conductivity, whereas at higher values of the magnetic field, a linear increase is seen. Use of the in-medium scattering cross section is found to produce a significant effect on the temperature dependence of both electrical and Hall conductivities compared to the case where the vacuum cross section is used.
机译：在放松时间近似范围内的动力学理论方法评价均匀磁场中的电气和霍尔电导率。使用热场理论技术，使用用于交换的ρ和ΣMesons的单环改性的热传播器获得ππ散射的介质横截面

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