3 papers
cond-mat.str-el2026
Topological phases of bosons with local parity coupling on a dimerized lattice
Ashirbad Padhan, Harsh Nigam
Symmetry-protected topological (SPT) phases in interacting bosonic systems have been widely explored, with many realizations emerging from the interplay of interactions, lattice ge…
cond-mat.str-el2024
Phases and phase transitions in a dimerized spin- XXZ chain
Harsh Nigam, Ashirbad Padhan, Diptiman Sen +2
We revisit the phase diagram of the dimerized XXZ spin- chain with nearest-neighbor couplings which was studied numerically in Phys. Rev. B 106, L201106 (2022). The mo…
cond-mat.str-el2024
Variational wave-functions for correlated metals
Ankush Chaubey, Harsh Nigam, Subhro Bhattacharjee +1
We study a set of many-body wave-functions of Fermions that are naturally written using momentum space basis and allow for quantum superposition of Fermion occupancy, $\{n_{\bf k}\…