226 citations · 2.2k across the 57 of their papers we have counts for
4 papers · 1 filter
First order phase transitions in the square lattice "easy-plane" J-Q model
Nisheeta Desai, Ribhu K. Kaul
We study the quantum phase transition between the superfluid and valence bond solid in "easy-plane" J-Q models on the square lattice. The Hamiltonian we study is a linear combinati…
Stability of zero energy Dirac touchings in the honeycomb Hofstadter problem
Ankur Das, Ribhu K. Kaul, Ganpathy Murthy
We study the band structure of electrons hopping on a honeycomb lattice with 1/q (q integer) flux quanta through each elementary hexagon. In the nearest neighbor hopping model the…
Kagome model for a quantum spin liquid
Matthew S. Block, Jonathan D'Emidio, Ribhu K. Kaul
We present a study of a simple model antiferromagnet consisting of a sum of nearest neighbor SO() singlet projectors on the Kagome lattice. Our model shares some features with t…
Spin- designer hamiltonians and the square lattice Haldane nematic
Nisheeta Desai, Ribhu K. Kaul
We introduce a strategy to write down lattice models of spin rotational symmetric Hamiltonians with arbitrary spin- that are Marshall positive and can be simulated efficiently u…