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arXiv 2402.01042hep-th
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Dirac材料真空的非线性电动力学。光子磁性质与辐射压

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

A. W. Romero Jorge, A. Pérez Martínez, E. Rodríguez Querts

AI总结:

本文研究了磁场中Dirac材料内光子的磁性质,通过非线性Euler-Heisenberg电动力学的二阶展开计算了光子有效磁矩与辐射压等可观测量,发现非线性修正可放大至QED修正的$10^3$倍。

摘要:

我们研究了在磁场中穿过Dirac材料的光子的磁性质,同时考虑了真空和介质的贡献。通过在有限密度和温度下对非线性Euler-Heisenberg电动力学进行二阶展开,并考虑Dirac材料参数(Dirac精细结构常数、带隙和Fermi速度),获得了光子的传播性质。计算了总磁化强度(包括电子和光子的贡献)以及光子有效磁矩。通过对能量-动量张量的分量求平均,获得了光子能量密度、辐射压力和Poynting矢量等可观测量。所有量均用Lagrangian导数表示。与真空相关的量对于任意外磁场值均有效,并且恢复了弱场和强场极限。我们讨论了一些实验设想,这些实验可能有助于在Dirac材料中测试量子电动力学真空中强磁场的现象学,以及磁化强度、辐射压力和双折射上的非线性修正如何被放大至QED修正的$10^3$倍。

英文摘要:

We investigate the magnetic properties of photons propagating through Dirac materials in a magnetic field, considering both vacuum and medium contributions. Photon propagation properties are obtained through a second-order expansion of non-linear Euler-Heisenberg electrodynamics at finite density and temperature considering Dirac material parameters (Dirac fine structure constant, band gap and Fermi velocity). Total magnetization (including electrons and photon contributions) and photon-effective magnetic moment are computed. Observables such as photon energy density, radiation pressure, and Poynting vector are obtained by an average of components of the energy-momentum tensor. All quantities are expressed in terms of Lagrangian derivatives. Those related to the vacuum are valid for any value of the external magnetic field, and both the weak and strong field limits are recovered. 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 vacuum and how non-linear corrections on the magnetization, radiation pressure, and birefringence, are amplified up to $10^3$ times QED corrections.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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