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Quantum Chaos: Reduced Density Matrix Fluctuations in Coupled Systems | | Sankhasubhra Nag
; Gautam Ghosh
; Avijit Lahiri
; | | Date: |
25 Jun 2004 | | Subject: | quant-ph | | Abstract: | Following a recent work (briefly reviewed below) we consider temporal fluctuations in the reduced density matrix elements for a coupled system involving a pair of kicked rotors as also one made up of a pair of Harper Hamiltonians. These dynamical fluctuations are found to constitute a reliable indicator of the degree of chaos in the quantum dynamics, and are related to stationary features like the eigenvalue and eigenvector distributions of the system under consideration. A brief comparison is made with the evolution of the reduced distribution function in the classical phase space. | | Source: | arXiv, quant-ph/0406193 | | Services: | Forum | Review | PDF | Favorites | |
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