华东师范大学学报（自然科学版） ›› 2025, Vol. 2025 ›› Issue (3): 13-18.doi: 10.3969/j.issn.1000-5641.2025.03.002

• 物理学与电子学 • 上一篇    下一篇

Bandos-Lechner-Sorokin-Townsend电动力学中的黑体辐射

施洋, 王焘*()   

  1. 华东师范大学 物理与电子科学学院, 上海　200241
  • 收稿日期:2024-04-09 出版日期:2025-05-25 发布日期:2025-05-28
  • 通讯作者: 王焘 E-mail:twang@phy.ecnu.edu.cn
  • 基金资助:
    国家自然科学基金(11834003)

Blackbody radiation in Bandos-Lechner-Sorokin-Townsend electrodynamics

Yang SHI, Tao WANG*()   

  1. School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China
  • Received:2024-04-09 Online:2025-05-25 Published:2025-05-28
  • Contact: Tao WANG E-mail:twang@phy.ecnu.edu.cn

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摘要：

Bandos-Lechner-Sorokin-Townsend电动力学是麦克斯韦电动力学的一个双参数拓展, 它统一了Born-Infeld电动力学和ModMax电动力学, 并满足电磁对偶. 在这个新的电动力学理论中, 研究了强磁背景场中电磁波的色散关系, 并以此为基础计算了光子气的热力学量, 如内能密度、压强等, 得到了黑体辐射谱的修正, 特别是对Stefan-Boltzmann定律的修正. 由于色散关系对背景磁场方向的依赖, 黑体辐射功率是面元方向和背景磁场方向夹角的函数.

关键词: 非线性电动力学, 热力学, 黑体辐射

Abstract:

Bandos-Lechner-Sorokin-Townsend electrodynamics is a two-parameter extension of Maxwell electrodynamics. It unifies Born-Infeld and ModMax theories and satisfies electromagnetic duality. In this new electrodynamic theory, the dispersion relation of electromagnetic waves is examined in the presence of a strong magnetic background field. Based on this, thermodynamic quantities, such as the energy density and pressure of the photon gas, are calculated. It is discovered that the BLST theory provides a modification to the blackbody radiation spectrum, particularly to Stefan-Boltzmann law. As the dispersion relations are dependent on the direction of the background magnetic field, the blackbody radiation power is a function of the angle between the area element direction and background magnetic field direction.

Key words: nonlinear electrodynamics, thermodynamics, blackbody radiation

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