Variational Master Field for Large-N Interacting Matrix Models - Free Random Variables on Trial

Details Variational Master Field for Large-N Interacting Matrix Models - Free Random Variables on Trial Variational Master Field for Large-N Interacting Matrix Models - Free Random Variables on Trial

1996-09-27

arxiv.org/abs/hep-th/9609216v1

Nucl.Phys. B488 (1997) 735-774

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 16 figures

Scientific paper

10.1016/S0550-3213(97)00043-6

Matrices are said to behave as free non-commuting random variables if the action which governs their dynamics constrains only their eigenvalues, i.e. depends on traces of powers of individual matrices. The authors use recently developed mathematical techniques in combination with a standard variational principle to formulate a new variational approach for matrix models. Approximate variational solutions of interacting large-N matrix models are found using the free random matrices as the variational space. Several classes of classical and quantum mechanical matrix models with different types of interactions are considered and the variational solutions compared with exact Monte Carlo and analytical results. Impressive agreement is found in a majority of cases.

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