47 citations · 136 across the 8 of their papers we have counts for
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Beyond Nearest-neighbour Universality of Spectral Fluctuations in Quantum Chaotic and Complex Many-body Systems
Debojyoti Kundu, Santosh Kumar, Subhra Sen Gupta
Discerning chaos in quantum systems is an important problem as the usual route of Lyapunov exponents in classical systems is not straightforward in quantum systems. A standard rout…
Spectral Crossovers and Universality in Quantum Spin-chains Coupled to Random Fields
Debojyoti Kundu, Santosh Kumar, Subhra Sen Gupta
We study the spectral properties of and spectral-crossovers between different random matrix ensembles (Poissonian, GOE, GUE) in correlated spin-chain systems, in the presence of ra…
Signatures of spectral crossovers in the short- and long-range spectral correlations of a disordered spin-chain with Kramers degeneracy
Debojyoti Kundu, Santosh Kumar, Subhra Sen Gupta
We investigate several distinct spectral crossovers amongst various integrable and quantum-chaotic limits of a 1D disordered quantum spin-1/2 model, by tuning the relative amplitud…