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7 papers
Su-Schrieffer-Heeger model driven by sequences of two unitaries: periodic, quasiperiodic, aperiodic, and random protocols
Maitri Ganguli, Diptiman Sen
We study the effect of driving the Su-Schrieffer-Heeger model using two unitary operators and in different combinations; the unitaries differ in the values of the inter…
Tunable topology, Hall response, and spin-textures in bicircularly polarized light illuminated altermagnets
Maitri Ganguli, Aneek Jana, Awadhesh Narayan
Altermagnets, featuring non-relativistic spin splitting, have drawn enormous attention due to their intriguing properties. Here, we investigate the effects of shining bicircularly…
Aspects of Hilbert space fragmentation in the quantum East model: fragmentation, subspace-restricted quantum scars, and effects of density-density interactions
Maitri Ganguli, Sreemayee Aditya, Diptiman Sen
We investigate a one-dimensional correlated-hopping model of spinless fermions with an East constraint. We first analytically unravel the complete fragmentation structure of this m…
Spread Complexity in Non-Hermitian Many-Body Localization Transition
Maitri Ganguli
We study the behavior of spread complexity in the context of non-Hermitian many-body localization Transition (MBLT). Our analysis has shown that the singular value spread complexit…
Generalization of Modular Spread Complexity for Non-Hermitian Density Matrices
Aneek Jana, Maitri Ganguli
In this work we generalize the concept of modular spread complexity to the cases where the reduced density matrix is non-Hermitian. This notion of complexity and associated Lanczos…
Floquet engineering of topological semimetals with bicircularly polarized light
Maitri Ganguli, Aneek Jana, Awadhesh Narayan
We study the effect of illumination of bicircularly polarized light (BCL) on topological semimetals, namely multifold fermion and line-node semimetals. We demonstrate, by means of…