4 papers
Theory of Tunneling in the Exciton Condensate of Bilayer Quantum Hall Systems
Kwon Park
We develop a theory of interlayer tunneling in the exciton condensate of bilayer quantum Hall systems, which predicts strongly enhanced, but finite, tunneling conductance peaks nea…
Bond and Neel order and fractionalization in ground states of easy-plane antiferromagnets in two dimensions
Kwon Park, Subir Sachdev
We describe the zero temperature phases and phase boundaries of an effective lattice model for frustrated, easy-plane, spin S=1/2 quantum antiferromagnets. The model contains state…
Ground states of quantum antiferromagnets in two dimensions
Subir Sachdev, Kwon Park
We explore the ground states and quantum phase transitions of two-dimensional, spin S=1/2, antiferromagnets by generalizing lattice models and duality transforms introduced by Sach…
Bond operator theory of doped antiferromagnets: from Mott insulators with bond-centered charge order, to superconductors with nodal fermions
Kwon Park, Subir Sachdev
The ground states and excitations of two-dimensional insulating and doped Mott insulators are described by a bond operator formalism. While the method represents the degrees of fre…