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Decay of a superfluid currents in a moving system of strongly interacting bosons
A. Polkovnikov, E. Altman, E. Demler +2
We analyze the stability and decay of supercurrents of strongly interacting bosons on optical lattices. At the mean field level, the system undergoes an irreversible dynamic phase…
Properties and Detection of Spin Nematic Order in Strongly Correlated Electron Systems
Daniel Podolsky, Eugene Demler
A spin nematic is a state which breaks spin SU(2) symmetry while preserving translational and time reversal symmetries. Spin nematic order can arise naturally from charge fluctuati…
Superfluid-insulator transition in a moving system of interacting bosons
E. Altman, A. Polkovnikov, E. Demler +2
We analyze stability of superfluid currents in a system of strongly interacting ultra-cold atoms in an optical lattice. We show that such a system undergoes a dynamic, irreversible…
Engineering Superfluidity in Bose-Fermi Mixtures of Ultracold Atoms
D. -W. Wang, M. D. Lukin, E. Demler
We investigate many-body phase diagrams of atomic boson-fermion mixtures loaded in the two-dimensional optical lattice. Bosons mediate an attractive, finite-range interaction betwe…
Competition between Triplet Superconductivity and Antiferromagnetism in Quasi One-Dimensional Electron Systems
Daniel Podolsky, Ehud Altman, Timofey Rostunov +1
We investigate the competition between antiferromagnetism and triplet superconductivity in quasi one-dimensional electron systems. We show that the two order parameters can be unif…
Superconducting and charge-density wave instabilities in ultrasmall-radius carbon nanotubes
Ryan Barnett, Eugene Demler, Efthimios Kaxiras
We perform a detailed analysis of the band structure, phonon dispersion, and electron-phonon coupling of three types of small-radius carbon nanotubes (CNTs): (5,0), (6,0), and (5,5…