BARC/PUB/2003/0524

 
 

An ensemble of non-Hermitian Gaussian-random 2 x 2 matrices admitting the wigner surmise

 
     
 
Author(s)

Ahmed, Z.
(NPD)

Source

Physics Letters-A, 2003. Vol. 308: pp. 140-142

ABSTRACT

It is shown that an ensemble of complex pseudo-Hermitian (2×2)matrices with three independent elements drawn from a Gaussian random population can admit the level-spacing distribution P(x) =Πx ⁄ 2 πx2/4(Wigner surmise) despite the breaking of time-reversal-invariance. Notably, the Wigner surmise is known to be exact for an ensemble of Gaussian-random 2×2 real-symmetric matrices. Thus, the connection between the symmetry possessed by a Hamiltonian and the degree of level repulsion becomes non-unique

 
 
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