标题： 非线性电动力学用于狄拉克材料的真空。 光子磁性属性和辐射压力 显示英文标题

标题： Nonlinear electrodynamics for the vacuum of Dirac materials. Photon magnetic properties and radiation pressures

摘要： 我们研究了在存在磁场的情况下，光子通过狄拉克材料时的磁性特性，并考虑了介质和真空的贡献。 真空光子传播特性是通过考虑狄拉克材料参数（有效结构常数、带隙和费米速度）的非线性欧拉-海森堡电动力学的二阶展开得到的。 得到了总磁化强度和有效磁矩。 通过能量动量张量分量的平均得到了诸如能量密度、辐射压和坡印廷矢量等可观测量。 所有这些量都用拉格朗日导数表示，并适用于外部磁场的任意值。 所有量都恢复了弱场和强场极限。 我们讨论了一些可能有助于测试狄拉克材料中量子电动力学真空中强磁场现象的实验想法。 显示英文摘要

摘要： We investigate the magnetic properties of photons propagating through Dirac materials in the presence of a magnetic field, taking into account both medium and vacuum contributions. The vacuum photon propagation properties are obtained through a second-order expansion of nonlinear Euler-Heisenberg electrodynamics considering Dirac material parameters (effective structure constant, band gap and Fermi velocity, respectively). Total magnetization and effective magnetic moment are obtained. Observables such as energy density, radiation pressure, and Poynting vector are getting by an average of components of the energy-momentum tensor. All these quantities are expressed in terms of Lagrangian derivatives and are valid for arbitrary values of the external magnetic field. The weak and strong field limits are recovered for all the quantities. We discuss some ideas of experiments that may contribute to testing in Dirac materials the phenomenology of the strong magnetic field in the Quantum Electrodynamic's vacuum