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Vortices in spin-orbit-coupled Bose-Einstein condensates
Realistic methods to create vortices in spin-orbit-coupled Bose-Einstein condensates are discussed. It is shown that, contrary to common intuition, rotation of the trap containing a spin-orbit
Absence of Bose condensation on lattices with moat bands
We study hard-core bosons on a class of frustrated lattices with the lowest Bloch band having a degenerate minimum along a closed contour, the moat, in the reciprocal space. We show that at small
Boundary Wess-Zumino-Novikov-Witten model from the pairing Hamiltonian
Correlation functions of primary fields in the Wess-Zumino-Novikov-Witten (WZNW) model are known to satisfy a system of Knizhnik-Zamolodchikov (KZ) equations, which involve constants of motion of the
Pseudogap in underdoped cuprates and spin-density-wave fluctuations
We analyze fermionic spectral function in the spin-density-wave (SDW) phase of quasi-two-dimensional (quasi-2D) cuprates at small but finite $T$. We use a nonperturbative approach and sum up infinite
Composite fermion state of spin-orbit coupled bosons
Department of Physics, Yale University, New Haven, Connecticut 06520, USA(Dated: August 31, 2012)We consider spinor Bose gas with the isotropic Rashba spin-orbit coupling in 2D. We argue that atlow
Spontaneous formation of a nonuniform chiral spin liquid in a moat-band lattice.
It is shown that the ground state breaks time reversal as well as inversion symmetries, which may be identified with the chiral spin liquid, has a bulk gap and chiral gapless edge excitations and is equivalent to the s=1/2  XY model at a zero magnetic field.
Statistical Transmutation in Floquet Driven Optical Lattices.
It is shown that interacting bosons in a periodically driven two dimensional (2D) optical lattice may effectively exhibit fermionic statistics and that the velocity distribution of the released bosons is a sensitive probe of the fermionics nature of their stationary Floquet state.
Proposed signature of Anderson localization and correlation-induced delocalization in an N-leg optical lattice
We propose a realization of the one-dimensional random dimer model and certain N-leg generalizations using cold atoms in an optical lattice. We show that these models exhibit multiple delocalization
Fermionization of bosons in a flat band
Strongly interacting bosons that live in a lattice with degeneracy in its lowest energy band experience frustration that can prevent the formation of a Bose-Einstein condensate. Such systems form an
Topological spin ordering via Chern-Simons superconductivity
We use the Chern-Simons (CS) fermion representation of s =1/2 spin operators to construct topological, long-range magnetically ordered states of interacting two-dimensional (2D) quantum spin models.