论文标题
在强磁场的情况下，在热QCD培养基中的Seebeck效应
Seebeck effect in a thermal QCD medium in the presence of strong magnetic field
论文作者
论文摘要
在超层次的重离子碰撞实验后创建的强烈相互作用的党介质在碰撞的中央和外围区域之间表现出显着的温度梯度，进而能够在培养基中诱导电场。一种称为塞贝克效应的现象。该效果是通过单位温度梯度的诱导电场的大小来量化的 - Seebeck系数（$ S $）。我们研究了相对论鲍尔茨曼的放松时间近似中的系数，$ s $，这是温度（$ t $）和化学潜力（$μ$）的函数，在其中，我们发现当前夸克质量，$ s $的幅度为$ s $的单个口味的$ s $，以及与$ t $ $ $ $ $ themed a the Medue cons a $ them a $ $ them $ the $ the $ the $ the $ the $ the $ the $ the $ t night $ t night $ $ $。在重离子撞机实验中，在非中央碰撞中的强磁场（$ b $）的出现激发了我们研究$ b $对Seebeck效应的影响。强$ b $以多重方式影响$ s $，通过以下方式：a）由于尺寸降低而修改相位，b）在最低兰道水平（职业概率）和c）放松时的分散关系。我们发现，强大的$ b $不仅会降低单个物种的$ s $的幅度，而且还可以翻转其标志。这会导致比其$ b = 0 $的介质的幅度更快地减少介质的大小。 We then explore how the interactions among partons in perturbative thermal QCD in the quasiparticle framework affect Seebeck effect, where we find that even in strong B, there is no more a flip of the sign of $S$ for individual species and an enhancement of the magnitudes of $S$ of individual species as well as that of the medium, compared to current quark mass description at either $B=0$ or $B \neq 0$.
The strongly interacting partonic medium created post ultrarelativistic heavy ion collision experiments exhibits a significant temperature-gradient between the central and peripheral regions of the collisions, which in turn, is capable of inducing an electric field in the medium; a phenomenon known as Seebeck effect. The effect is quantified by the magnitude of the induced electric field per unit temperature-gradient - the Seebeck coefficient ($S$). We study the coefficient, $S$ in the relativistic Boltzmann transport equation in relaxation-time approximation, as a function of temperature ($T$) and chemical potential ($μ$), wherein we find that with current quark masses, the magnitude of $S$ for individual flavours as well as that for the medium as a whole decreases with $T$ and increases with $μ$, with the electric charge of the flavour deciding the sign of $S$. The emergence of a strong magnetic field ($B$) in the non-central collisions at heavy-ion collider experiments motivates us to study the effect of $B$ on Seebeck effect. The strong $B$ affects $S$ in multifold ways, via : a) modification of phase-space due to the dimensional reduction, b) dispersion relation in lowest Landau level (occupation probability), and c) relaxation-time. We find that a strong $B$ not only decreases the magnitudes of $S$'s of individual species, it also flips their signs. This leads to a faster reduction of the magnitude of $S$ of the medium than its counterpart at $B=0$. We then explore how the interactions among partons in perturbative thermal QCD in the quasiparticle framework affect Seebeck effect, where we find that even in strong B, there is no more a flip of the sign of $S$ for individual species and an enhancement of the magnitudes of $S$ of individual species as well as that of the medium, compared to current quark mass description at either $B=0$ or $B \neq 0$.
