论文标题
具有磁化热QCD介质的Seebeck和Nernst系数，并保存数字
Seebeck and Nernst coefficients of a magnetized hot QCD medium with number conserving kernel
论文作者
论文摘要
我们研究了在重离子对撞机实验中在非中性事件中产生的热和磁化QCD培养基的热电响应。使用Bhatnagar-Gross-Krook（BGK）将媒介的碰撞方面嵌入了相对论玻尔兹曼传输方程（RBTE）中 与常用的松弛时间近似（RTA）不同，碰撞积分可确保颗粒数保存。我们已经将热培养基效应纳入了准颗粒模型的幌子，其中partons之间的相互作用体现在夸克的介质依赖性质量中，该夸克的相关质量已使用扰动热QCD的框架与背景中的磁场进行了评估。在没有$ b $的情况下，与幼稚的RTA相比 虽然它对复合党介质的增强。在存在强磁场（$ b $）的情况下，BGK项可增强单个口味以及培养基的Seebeck系数。媒介在缺席的情况下以及在强$ b $中的情况下以夸克化学势（$μ$）的强度上升。我们观察到弱磁场中的Seebeck和Nernst系数中的手性依赖性是 左手和右手手性模式的堕落在薄弱的$ b $中被取消。与右手模式相反的左手模式，Seebeck系数更大。对于两个碰撞期，Seebeck系数在弱字段中几乎相似，而Nernst系数在BGK Collision术语中的$ L $（$ R $）模式下降了（增强）。
We have studied the thermoelectric response of a hot and magnetized QCD medium created in the noncentral events at heavy-ion collider experiments. The collisional aspects of the medium have been embedded in the relativistic Boltzmann transport equation (RBTE) using Bhatnagar-Gross-Krook (BGK) collision integral, which insures the particle number conservation, unlike the commonly used relaxation time approximation (RTA). We have incorporated the thermal medium effects in the guise of a quasiparticle model, where the interaction among the partons is embodied in the medium dependent mass of the quark, which has been evaluated using the framework of the perturbative thermal QCD with a magnetic field in the background. In the absence of $B$, the Seebeck coefficient for individual quark flavors gets slightly reduced in the BGK term in comparison to naive RTA, while it gets enhanced for the composite partonic medium. In the presence of strong magnetic field ($B$), the BGK term enhances the Seebeck coefficient for the individual flavors as well as that for medium. The medium Seebeck coefficient rises with the strength of quark chemical potential ($μ$) in the absence as well as that in the strong $B$. We observe chirality dependence in the Seebeck and Nernst coefficients in the weak magnetic field as the degeneracy in the masses of left- and right-handed chiral modes gets lifted in the weak $B$. Seebeck coefficient is larger for left-handed modes contrary to the Nernst coefficient which is higher for the right-handed modes. Seebeck coefficient is almost similar in the weak field for both the collision term, while Nernst coefficient gets reduced (enhanced) for $L$ ($R$) modes considerably in the BGK collision term.
