Ordered Level Spacing Distribution in Embedded Random Matrix Ensembles

Abstract

The probability distribution of the closest neighbor and farther neighbor spacings from a given level have been studied for interacting fermion/boson systems with and without spin degree of freedom constructed using an embedded GOE of one plus random two-body interactions. Our numerical results demonstrate a very good consistency with the recently derived analytical expressions using a $3\times 3$ random matrix model and other related quantities by Srivastava et. al [{\it J. Phys. A: Math. Theor.} {\bf 52} 025101 (2019)]. This establishes conclusively that local level fluctuations generated by embedded ensembles (EE) follow the results of classical Gaussian ensembles.

8 pages, 4 figures, 2 tables

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Cited by in corpus (1)

• Consecutive level spacings in the chiral Gaussian unitary ensemble: From the hard and soft edge to the bulk