185 citations · 407 across the 7 of their papers we have counts for
4 papers · 1 filter
Quantum geometry of correlated many-body states
S. R. Hassan, R. Shankar, Ankita Chakrabarti
We provide a definition of the quantum distances of correlated many fermion wave functions in terms of the expectation values of certain operators that we call exchange operators.…
RVB gauge theory and the Topological degeneracy in the Honeycomb Kitaev model
Saptarshi Mandal, R. Shankar, G. Baskaran
We relate the Z gauge theory formalism of the Kitaev model to the SU(2) gauge theory of the resonating valence bond (RVB) physics. Further, we reformulate a known Jordan-Wigner…
Manipulating unpaired Majorana fermions in a quantum spin chain
Abhinav Saket, S. R. Hassan, R. Shankar
We analyse an exactly solvable spin- chain which is a generalised version of Kitaev's honeycomb model. We show that every state of the system has a fold degeneracy,…
Tuning the conductance of Dirac fermions on the surface of a topological insulator
S. Mondal, D. Sen, K. Sengupta +1
We study the transport properties of the Dirac fermions with Fermi velocity on the surface of a topological insulator across a ferromagnetic strip providing an exchange field…