Geometry Effect on Black Body Radiation with Different Boundary Conditions

Autor:	Zhang, Zheng, Zhao, Tong, Xia, Y. -H, Zong, Hongshi
Rok vydání:	2019
Předmět:	Quantum Physics Condensed Matter - Statistical Mechanics
Druh dokumentu:	Working Paper
Popis:	We study the black body radiation in cavities of different geometry with different boundary conditions, and the formulas of energy spectral densities in films and rods are obtained, also the approximate energy spectral densities in cubic boxes are calculated. We find that the energy spectral densities deviate from Planck's formula greatly when the length(s) at some directions of the cavity can be compared to the typical wavelengths of black body radiation in infinite volume and the boundary conditions also affect the results. We obtain an asymptotic formula of energy spectral density for a closed cavity with Dirichlet boundary condition and find it still fails when the size of the cavity is too small. Comment: 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1905.05555 Zobrazit plný text záznamu View this record from Arxiv