Black-body radiation in extra dimensions

Details Black-body radiation in extra dimensions Black-body radiation in extra dimensions

2005-06-16

arxiv.org/abs/quant-ph/0506131v1

J.Phys.A40:14309,2007

Physics

Quantum Physics

9 pages

Scientific paper

10.1088/1751-8113/40/47/018

The general form of the Stefan-Boltzmann law for the energy density of black-body radiation is generalized to a spacetime with extra dimensions using standard kinetic and thermodynamic arguments. From statistical mechanics one obtains an exact formula. In a field-theoretic derivation, the Maxwell field must be quantized. The notion of electric and magnetic fields is different in spacetimes with more than four dimensions. While the energy-momentum tensor for the Maxwell field is traceless in four dimensions, it is not so when there are extra dimensions. But it is shown that its thermal average is traceless and in agreement with the thermodynamic results.

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