5 papers
Identifying mobility edge from finite temperature spectral form factor
Basudha Roy, Anandamohan Ghosh, Adway Kumar Das
The spectral form factor (SFF) is a measure of energy correlations and has been widely used to identify the transition from the ergodic to the localized phase in interacting many-b…
Signatures of Nonergodicity in Sparse Random Matrices
Sagnik Seth, Adway Kumar Das, Anandamohan Ghosh
The prevalence of sparsity in interacting many-body systems motivates an investigation into the spectral statistics of sparse random matrices with on-site disorder. We numerically…
Anomalous energy correlations and spectral form factor in the nonergodic phase of the -ensemble
Basudha Roy, Adway Kumar Das, Anandamohan Ghosh +1
The -ensemble is a prototypical model of a single particle system on a one-dimensional disordered lattice with inhomogeneous nearest neighbor hopping. Corresponding nonergodic…
Spectral form factor and energy correlations in banded random matrices
Adway Kumar Das, Anandamohan Ghosh, Lea F. Santos
Banded random matrices were introduced as a more realistic alternative to full random matrices for describing the spectral statistics of heavy nuclei. Initially considered by Wigne…
Emergent multifractality in power-law decaying eigenstates
Adway Kumar Das, Anandamohan Ghosh, Ivan M. Khaymovich
Eigenstate multifractality is of significant interest with potential applications in various fields of quantum physics. Most of the previous studies concentrated on fine-tuned quan…