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Universal entanglement entropy in 2D conformal quantum critical points
Benjamin Hsu, Michael Mulligan, Eduardo Fradkin +1
We study the scaling behavior of the entanglement entropy of two dimensional conformal quantum critical systems, i.e. systems with scale invariant wave functions. They include two-…
Li non-stoichiometry and crystal growth of untwinned 1D quantum spin system Lix Cu2 O2
H. C. Hsu, H. L. Liu, F. C. Chou
Floating-zone growth of untwinned single crystal of Li_xCu_2O_2 with high Li content of x ~ 0.99 is reported. Li content of Li_xCu_2O_2 has been determined accurately through combi…
Theory of the striped superconductor
Erez Berg, Eduardo Fradkin, Steven A. Kivelson
We define a distinct phase of matter, a "pair density wave" (PDW), in which the superconducting order parameter varies periodically as a function of position such that when ave…
Time-Reversal Symmetry Breaking and Spontaneous Anomalous Hall Effect in Fermi Fluids
Kai Sun, Eduardo Fradkin
We study the spontaneous non-magnetic time-reversal symmetry breaking in a two-dimensional Fermi liquid without breaking either the translation symmetry or the U(1) charge symmetry…
Fluctuating Stripes in Strongly Correlated Electron Systems and the Nematic-Smectic Quantum Phase Transition
Kai Sun, Benjamin M. Fregoso, Michael J. Lawler +1
We discuss the quantum phase transition between a quantum nematic metallic state to an electron metallic smectic state in terms of an order-parameter theory coupled to fermionic qu…
Topological Entanglement Entropy in Chern-Simons Theories and Quantum Hall Fluids
Shiying Dong, Eduardo Fradkin, Robert G. Leigh +1
We compute directly the entanglement entropy of spatial regions in Chern-Simons gauge theories in 2+1 dimensions using surgery. We use these results to determine the universal topo…