Abstract
In this paper the quantum heat transport equation (QHT) is applied to the study of thermal properties of Planck gas, i.e., a gas of massive particles with mass equal to the Planck massM P = (łc/G)1/2 and whose relaxation time equals the Planck timeτ p = (łG/c 5)1/2. The quantum of thermal energy for a Planck gas,E Planck = 1019GeV, and the quantum thermal diffusion coefficientD Planck = (ħG/c)1/2 are calculated. Within the framework of QHT the thermal phenomena in a Planck gas can be divided into two classes: for a time period shorter thanτ p , the time reversal symmetry holds and for a time period longer thanτ p , time symmetry is broken, i.e., a time arrow is created.
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Kozlowski, M., Marciak-Kozlowska, J. The time arrow in a Planck gas. Found Phys Lett 10, 295–299 (1997). https://doi.org/10.1007/BF02764210
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DOI: https://doi.org/10.1007/BF02764210