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- W1570440521 abstract "In 1914, Planck introduced the concept of a white body. In nature, no true white bodies are known. We assume that the universe after last-scattering is an ideal white body that contains a tremendously large number of thermal photons and is at an extremely high temperature. Bose-Einstein condensation of photons in an ideal white body is investigated within the framework of quantum statistical mechanism. The computation shows that the transition temperature $T_c$ is a monotonically increasing function of the number density $n$ of photons. At finite temperature, we find that the condensate fraction $N_0(T)/N$ decreases continuously from unity to zero as the temperature increases from zero to the transition temperature $T_c$. Further, we study the radiation properties of an ideal white body. It is found that in the condensation region of $T<T_c$, the spectral intensity $I(omega,T)$ of white body radiation is identical with Planck's law for blackbody radiation." @default.
- W1570440521 created "2016-06-24" @default.
- W1570440521 creator A5005200877 @default.
- W1570440521 date "2014-12-30" @default.
- W1570440521 modified "2023-09-25" @default.
- W1570440521 title "Bose-Einstein condensation of photons in the matter-dominated universe" @default.
- W1570440521 cites W2007846652 @default.
- W1570440521 doi "https://doi.org/10.48550/arxiv.1412.8579" @default.
- W1570440521 hasPublicationYear "2014" @default.
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