25 citations · 49 across the 5 of their papers we have counts for
5 papers
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…
Multifractal dimensions for orthogonal-to-unitary crossover ensemble
Ayana Sarkar, Ashutosh Dheer, Santosh Kumar
Multifractal analysis is a powerful approach for characterizing ergodic or localized nature of eigenstates in complex quantum systems. In this context, the eigenvectors of random m…
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…
Distribution of the ratio of two consecutive level spacings in orthogonal to unitary crossover ensembles
Ayana Sarkar, Manuja Kothiyal, Santosh Kumar
The ratio of two consecutive level spacings has emerged as a very useful metric in investigating universal features exhibited by complex spectra. It does not require the knowledge…
Bures-Hall Ensemble: Spectral Densities and Average Entropies
Ayana Sarkar, Santosh Kumar
We consider an ensemble of random density matrices distributed according to the Bures measure. The corresponding joint probability density of eigenvalues is described by the fixed…