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cond-mat.str-el2016
Quantum criticality in the two-dimensional dissipative quantum XY model-II
Lijun Zhu, Changtao Hou, Chandra M. Varma
Earlier Monte-Carlo calculations on the dissipative two-dimensional XY model are extended in several directions. We study the phase diagram and the correlation functions when dissi…
cond-mat.str-el2016
Phase diagram and quantum-criticality of the two dimensional dissipative quantum XY model
Changtao Hou, Chandra M. Varma
The two-dimensional dissipative quantum XY model is applicable to the quantum-critical properties of diverse experimental systems, ranging from the superconductor to insulator tran…
cond-mat.str-el2007★ 69 cited
Irrational vs. rational charge and statistics in two-dimensional quantum systems
Claudio Chamon, Chang-Yu Hou, Roman Jackiw +3
We show that quasiparticle excitations with irrational charge and irrational exchange statistics exist in tight-biding systems described, in the continuum approximation, by the Dir…