4 papers · 1 filter
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…
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…