标题： 导电率之间的精确关系及其与QCD物质化学组成的关系 显示英文标题

标题： Exact relations between the conductivities and their connection to the chemical composition of QCD matter

摘要： 我们提出了强相互作用物质的扩散系数或电导率$\kappa_{qq'}/T = \sigma_{qq'}$之间的精确关系。 我们表明，一旦在两种不同的电荷表示中知道对角线项，当应用同位旋对称性时，非对角线系数是通过对角线项的函数。 作为一个重要的例子，我们根据格点量子色动力学（LQCD）的现有计算推断电导率，并认为这些计算由于为实现它们所作的近似而受到影响。 此外，我们认为相对于守恒的夸克味的电导率表示可能为强相互作用物质的化学组成提供更深入的见解。 显示英文摘要

摘要： We present exact relations between the diffusion coefficients or conductivities, $\kappa_{qq'}/T = \sigma_{qq'}$, of strongly-interacting matter. We show that once the diagonal entries are known in two different charge representations, the off-diagonal coefficients are functions of the diagonal entries once isospin symmetry applies. As an important example, we infer the conductivities on the basis of available calculations from lattice quantum chromodynamics (LQCD) and argue that these computations suffer under the approximations made to achieve them. Further, we argue that the representation of the conductivities w.r.t. to the conserved quark-flavors may deliver more insight into the chemical composition of strongly-interacting matter.