Now showing items 1-20 of 170

    • Adiabatic Preparation of Many-Body States in Optical Lattices 

      Sorensen, Anders; Altman, Ehud; Gullans, Michael John; Porto, J.; Lukin, Mikhail D.; Demler, Eugene A. (American Physical Society, 2010)
      We analyze a technique for the preparation of low-entropy many-body states of atoms in optical lattices based on adiabatic passage. In particular, we show that this method allows preparation of strongly correlated states ...
    • Anomalous Expansion of Attractively Interacting Fermionic Atoms in an Optical Lattice 

      Hackermuller, Lucia; Schneider, Ulrich; Moreno-Cardoner, Maria; Kitagawa, Takuya; Will, Sebastian; Best, Thorsten; Demler, Eugene A.; Altman, Ehud; Bloch, Immanuel; Paredes, Belen (American Association for the Advancement of Science, 2010)
      Strong correlations can dramatically modify the thermodynamics of a quantum many-particle system. Especially intriguing behaviour can appear when the system adiabatically enters a strongly correlated regime, for the interplay ...
    • Antiferromagnetic noise correlations in optical lattices 

      Bruun, G. M.; Syljuåsen, O. F.; Pedersen, Kine; Andersen, B. M.; Demler, Eugene A.; Sørensen, A. S. (American Physical Society (APS), 2009)
      We analyze how noise correlations probed by time-of-flight experiments reveal antiferromagnetic (AF) correlations of fermionic atoms in two-dimensional and three-dimensional optical lattices. Combining analytical and quantum ...
    • Anyonic Interferometry and Protected Memories in Atomic Spin Lattices 

      Jiang, Liang; Brennen, Gavin; Gorshkov, Alexey Vyacheslavovich; Hammerer, Klemens; Hafezi, Mohammad; Demler, Eugene A.; Luki, Mikhail; Zoller, Peter (Nature Publishing Group, 2008)
      Strongly correlated quantum systems can exhibit exotic behavior called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena ...
    • Bilayer Coherent and Quantum Hall Phases: Duality and Quantum Disorder 

      Demler, Eugene A.; Nayak, Chetan; Das Sarma, S. (American Physical Society (APS), 2001)
      We consider a fully spin-polarized quantum Hall system with no interlayer tunneling at total filling factor n 3 1 k (where k is an odd integer) using the Chern-Simons-Ginzburg-Landau theory. Exploit- ing particle-vortex ...
    • Bilayer paired quantum Hall states and Coulomb drag 

      Kim, Yong Baek; Nayak, Chetan; Demler, Eugene A.; Read, N.; Das Sarma, S. (American Physical Society (APS), 2001)
      We consider a number of strongly correlated quantum Hall states that are likely to be realized in bilayer quantum Hall systems at total Landau level filling fraction T 1. One state, the (3,3, 1) state, can occur as an ...
    • Bilayer quantum Hall systems: spin–pseudospin symmetry breaking and quantum phase transitions 

      Das Sarma, Sankar; Demler, Eugene A. (Elsevier BV, 2001)
      We discuss and review recent advances in our understanding of quantum Hall systems where additional quantum numbers associated with spin and/or layer (pseudospin) indices play crucial roles in creating exotic quantum phases. ...
    • Bilayer Wigner crystals in a transition metal dichalcogenide heterostructure 

      Zhou, You; Sung, Jiho; Brutschea, Elise; Esterlis, Ilya; Wang, Yao; Scuri, Giovanni; Gelly, Ryan J.; Heo, Hoseok; Taniguchi, Takashi; Watanabe, Kenji; Zaránd, Gergely; Lukin, Mikhail D.; Kim, Philip; Demler, Eugene; Park, Hongkun (Springer Science and Business Media LLC, 2021-06-30)
    • Bloch oscillations of bosonic lattice polarons 

      Grusdt, Fabian; Shashi, A.; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2014)
      We consider a single-impurity atom confined to an optical lattice and immersed in a homogeneous Bose-Einstein condensate (BEC). Interaction of the impurity with the phonon modes of the BEC leads to the formation of a stable ...
    • Breakdown of the local density approximation in interacting systems of cold fermions in strongly anisotropic traps 

      Imambekov, Adilet; Bolech, C. J.; Lukin, Mikhail D.; Demler, Eugene A. (American Physical Society (APS), 2006)
      We consider spin-polarized mixtures of cold fermionic atoms on the BEC side of the Feshbach resonance. We demonstrate that a strongly anisotropic confining potential can give rise to a double-peak structure in the axial ...
    • Characterization of Topological States on a Lattice with Chern Number 

      Hafezi, Mohammad; Sørensen, Anders; Lukin, Mikhail D.; Demler, Eugene A. (Institute of Physics, 2008)
      We study Chern numbers to characterize the ground state of strongly interacting systems on a lattice. This method allows us to perform a numerical characterization of bosonic fractional quantum Hall (FQH) states on a lattice ...
    • Chiral Prethermalization in Supersonically Split Condensates 

      Agarwal, Kartiek; Torre, Emanuele G. Dalla; Rauer, Bernhard; Langen, Tim; Schmiedmayer, Jörg; Demler, Eugene A. (American Physical Society (APS), 2014)
      We study the dynamics of phase relaxation between a pair of one-dimensional condensates created by a supersonic unzipping of a single condensate. We use the Lorentz invariance of the low energy sector of such systems to ...
    • Classifying Novel Phases of Spinor Atoms 

      Barnett, Ryan; Turner, Ari; Demler, Eugene A. (American Physical Society (APS), 2006)
      We consider many-body states of bosonic spinor atoms which, at the mean-field level, can be characterized by a single-particle wave function for the Bose-Einstein condensation and Mott insulating states. We describe and ...
    • Classifying vortices in S = 3 Bose-Einstein condensates 

      Barnett, Ryan; Turner, Ari; Demler, Eugene A. (American Physical Society (APS), 2007)
      Motivated by the recent realization of a 52Cr Bose-Einstein condensate, we consider the phase diagram of a general spin-three condensate as a function of its scattering lengths. We classify each phase according to its ...
    • Coexistence of Gapless Excitations and Commensurate Charge-Density Wave in the 2H Transition Metal Dichalcogenides 

      Barnett, Ryan L.; Polkovnikov, Anatoli; Demler, Eugene A.; Yin, Wei-Guo; Ku, Wei (American Physical Society (APS), 2006)
      An unexpected feature common to 2H transition metal dichalcogenides (2H TMDs) is revealed with a first-principles Wannier function analysis of the electronic structure of the prototype 2H TaSe2: The lowenergy Ta ‘‘5dz2 ’’ ...
    • A cold-atom Fermi–Hubbard antiferromagnet 

      Mazurenko, Anton; Chiu, Christie Shinglei; Parsons, Maxwell Fredrick; Kanasz-Nagy, Marton; Schmidt, Richard; Grusdt, Fabian; Demler, Eugene A.; Greif, Daniel Guenther; Greiner, Markus (Springer Nature, 2017)
      Exotic phenomena in strongly correlated electron systems emerge from the interplay between spin and motional degrees of freedom. For example, doping an antiferromagnet is expected to give rise to pseudogap states and ...
    • Collective Phenomena in Quasi-Two-Dimensional Fermionic Polar Molecules: Band Renormalization and Excitons 

      Babadi, Mehrtash; Demler, Eugene A. (American Physical Society, 2011)
      We theoretically analyze a quasi-two-dimensional system of fermionic polar molecules in a harmonic transverse confining potential. The renormalized energy bands are calculated by solving the Hartree-Fock equation numerically ...
    • Competing orders in a magnetic field: Spin and charge order in the cuprate superconductors 

      Zhang, Ying; Demler, Eugene A.; Sachdev, Subir (American Physical Society (APS), 2002)
      We describe two-dimensional quantum spin fluctuations in a superconducting Abrikosov flux lattice induced by a magnetic field applied to a doped Mott insulator. Complete numerical solutions of a self-consistent large- N ...
    • Competing orders in thermally fluctuating superconductors in two dimensions 

      Sachdev, Subir; Demler, Eugene A. (American Physical Society (APS), 2004)
      We extend recent low-temperature analyses of competing orders in the cuprate superconductors to the pseudogap regime where all orders are fluctuating. A universal continuum limit of a classical Ginzburg-Landau functional ...