3 papers
cond-mat.stat-mech2024
Dissipative spectral form factor for elliptic Ginibre unitary ensemble and applications
Sunidhi Sen, Santosh Kumar, Ayana Sarkar +1
We investigate the dissipative spectral form factor (DSFF)--a widely used probe of non-Hermitian quantum chaos--in the elliptic Ginibre unitary ensemble (eGinUE), which interpolate…
math-ph2023
Spectral statistics of interpolating random circulant matrix and its applications to random circulant graphs
Sunidhi Sen, Himanshu Shekhar, Santosh Kumar
We consider a versatile matrix model of the form , where and are real random circulant matrices with independent but, in general, nonidentica…
quant-ph2023
Spectral crossover in non-hermitian spin chains: comparison with random matrix theory
Ayana Sarkar, Sunidhi Sen, Santosh Kumar
We systematically study the short range spectral fluctuation properties of three non-hermitian spin chain hamiltonians using complex spacing ratios. In particular we focus on the n…