Abstract
The classical phase space density projected on to the configuration space offers a means of comparing classical and quantum evolution. In this alternate approach that we adopt here, we show that for billiards, the eigenfunctions of the coarse-grained projected classical evolution operator are identical to a first approximation to the quantum Neumann eigenfunctions. Moreover, there exists a correspondence between the respective eigenvalues although their time evolutions differ.
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Biswas, D. Evolution of classical projected phase space density in billiards. Pramana - J Phys 64, 563–575 (2005). https://doi.org/10.1007/BF02706204
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DOI: https://doi.org/10.1007/BF02706204