8 citations · 25 across the 7 of their papers we have counts for
7 papers
Identifying chiral topological order in microscopic spin models by modular commutator
Avijit Maity, Aman Kumar, Vikram Tripathi
The chiral central charge is a key topological invariant of the edge characterizing the bulk two-dimensional chiral topological order, but its direct evaluation in microscopi…
Field tuning Kitaev systems for spin fractionalization and topological order
Jagannath Das, Sarbajaya Kundu, Aman Kumar +1
The honeycomb Kitaev model describes a spin liquid with topological order and fractionalized excitations consisting of gapped -fluxes and free Majorana fermions. Competing…
Microscopic theory of field-tuned topological transitions in the Kitaev honeycomb model
Jagannath Das, Aman Kumar, Vikram Tripathi
We microscopically construct an abelian mutual Chern-Simons lattice gauge theory for magnetic field-tuned topological transitions in the Kitaev model and obtain a complete characte…
Jordan-Wigner fermionization of quantum spin systems on arbitrary 2D lattices: A mutual Chern-Simons approach
Jagannath Das, Aman Kumar, Avijit Maity +1
A variety of analytical approaches have been developed for the study of quantum spin systems in two dimensions, the notable ones being spin-waves, slave boson/fermion parton constr…
Thermal Hall conductivity near field-suppressed magnetic order in a Kitaev-Heisenberg model
Aman Kumar, Vikram Tripathi
We investigate thermal Hall conductivity of a - Kitaev-Heisenberg model with a Zeeman field in the direction in the light of the recent debate surrounding th…
Quasiparticle metamorphosis in the random t-J model
Aman Kumar, Subir Sachdev, Vikram Tripathi
Motivated by the pseudogap-Fermi liquid transition in doped Mott insulators, we examine the excitations of a - model with random and all-to-all hopping and exchange. The stab…
Kitaev quasiparticles in a proximate spin liquid: A many-body localization perspective
Aman Kumar, Vikram Tripathi
We study the stability of Kitaev quasiparticles in the presence of a perturbing Heisenberg interaction as a Fock space localization phenomenon. We identify parameter regimes where…