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cond-mat.dis-nn2026
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…
cond-mat.dis-nn2026
Signatures of Nonergodicity in Sparse Random Matrices
Sagnik Seth, Adway Kumar Das, Anandamohan Ghosh
The prevalence of sparsity in the Fock space graph of interacting many-body systems motivates an investigation into the spectral statistics of sparse random matrices with on-site d…
quant-ph2026
Ground state and persistent oscillations in the quantum East model
Adway Kumar Das, Achilleas Lazarides
For the 1D quantum East model with open boundaries, we show that in the limit , the ground state is accurately captured by a simple spin-coherent product state. We f…