Geometric Theory of Lattice Vibrations and Specific Heat

Details Geometric Theory of Lattice Vibrations and Specific Heat Geometric Theory of Lattice Vibrations and Specific Heat

2005-12-28

arxiv.org/abs/math-ph/0512088v2

Physics

Mathematical Physics

31 pages, minor corrections made

Scientific paper

We discuss, from a geometric standpoint, the specific heat of a solid. This is a classical subject in solid state physics which dates back to a pioneering work by Einstein (1907) and its refinement by Debye (1912). Using a special quantization of crystal lattices and calculating the asymptotic of the integrated density of states at the bottom of the spectrum, we obtain a rigorous derivation of the classical Debye $T^3$ law on the specific heat at low temperatures. The idea and method are taken from discrete geometric analysis which has been recently developed for the spectral geometry of crystal lattices.

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