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Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
L. -M. Duan, E. Demler, M. D. Lukin
We describe a general technique that allows to induce and control strong interaction between spin states of neighboring atoms in an optical lattice. We show that the properties of…
Magnetoplasmon Excitations and Spin Density Instabilities in an Integer Quantum Hall System with a Tilted Magnetic Field
Daw-Wei Wang, S. Das Sarma, Eugene Demler +1
We study the magnetoplasmon collective mode excitations of integer quantum Hall systems in a parabolically confined quantum well nanostructure in the presence of a tilted magnetic…
Quantum phase transitions in the Bose-Fermi Kondo model
Gergely Zarand, Eugene Demler
We study quantum phase transitions in the Bose-Fermi Kondo problem, where a local spin is coupled to independent bosonic and fermionic degrees of freedom. Applying a second order e…
Translational Symmetry Breaking in the Superconducting State of the Cuprates: Analysis of the Quasiparticle Density of States
Daniel Podolsky, Eugene Demler, Kedar Damle +1
Motivated by the recent STM experiments of J.E. Hoffman et.al. and C. Howald et.al., we study the effects of weak translational symmetry breaking on the quasiparticle spectrum of a…
Novel Josephson effects between multi-gap and single-gap superconductors
D. F. Agterberg, Eugene Demler, B. Janko
Multi-gap superconductors can exhibit qualitatively new phenomena due to existence of multiple order parameters. Repulsive electronic interactions may give rise to a phase differen…