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arXiv · 1710.07712

Random Matrix Ensembles For Many-Body Quantum Systems

Manan Vyas·Thomas H. Seligman
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Abstract

Classical random matrix ensembles were originally introduced in physics to approximate quantum many-particle nuclear interactions. However, there exists a plethora of quantum systems whose dynamics is explained in terms of few-particle (predominantly two-particle) interactions. The random matrix models incorporating the few-particle nature of interactions are known as embedded random matrix ensembles. In the present paper, we provide a brief overview of these two ensembles and illustrate how the embedded ensembles can be successfully used to study decoherence of a qubit interacting with an environment, both for fermionic and bosonic embedded ensembles. Numerical calculations show the dependence of decoherence on the nature of the environment.

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Manan Vyas, Thomas H. Seligman. 2021-11-16. Random Matrix Ensembles For Many-Body Quantum Systems. https://doi.org/10.1063/1.5031701

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