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cond-mat.str-el2019★ 12 cited
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…
cond-mat.str-el2019★ 13 cited
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…