Browsing by Author "Demler, Eugene"
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Adiabatic Preparation of ManyBody 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 lowentropy manybody 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; MorenoCardoner, 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 manyparticle 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 timeofflight experiments reveal antiferromagnetic (AF) correlations of fermionic atoms in twodimensional and threedimensional 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 nonlocal 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 spinpolarized quantum Hall system with no interlayer tunneling at total filling factor n 3 1 k (where k is an odd integer) using the ChernSimonsGinzburgLandau theory. Exploit ing particlevortex ... 
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. ... 
Bloch oscillations of bosonic lattice polarons
Grusdt, Fabian; Shashi, A.; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2014)We consider a singleimpurity atom confined to an optical lattice and immersed in a homogeneous BoseEinstein 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 spinpolarized 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 doublepeak 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 onedimensional 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 manybody states of bosonic spinor atoms which, at the meanfield level, can be characterized by a singleparticle wave function for the BoseEinstein condensation and Mott insulating states. We describe and ... 
Classifying vortices in S = 3 BoseEinstein condensates
Barnett, Ryan; Turner, Ari; Demler, Eugene A. (American Physical Society (APS), 2007)Motivated by the recent realization of a 52Cr BoseEinstein condensate, we consider the phase diagram of a general spinthree condensate as a function of its scattering lengths. We classify each phase according to its ... 
Coexistence of Gapless Excitations and Commensurate ChargeDensity Wave in the 2H Transition Metal Dichalcogenides
Barnett, Ryan L.; Polkovnikov, Anatoli; Demler, Eugene A.; Yin, WeiGuo; Ku, Wei (American Physical Society (APS), 2006)An unexpected feature common to 2H transition metal dichalcogenides (2H TMDs) is revealed with a firstprinciples Wannier function analysis of the electronic structure of the prototype 2H TaSe2: The lowenergy Ta ‘‘5dz2 ’’ ... 
Collective Phenomena in QuasiTwoDimensional Fermionic Polar Molecules: Band Renormalization and Excitons
Babadi, Mehrtash; Demler, Eugene A. (American Physical Society, 2011)We theoretically analyze a quasitwodimensional system of fermionic polar molecules in a harmonic transverse confining potential. The renormalized energy bands are calculated by solving the HartreeFock 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 twodimensional 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 selfconsistent large N ... 
Competing orders in thermally fluctuating superconductors in two dimensions
Sachdev, Subir; Demler, Eugene A. (American Physical Society (APS), 2004)We extend recent lowtemperature analyses of competing orders in the cuprate superconductors to the pseudogap regime where all orders are fluctuating. A universal continuum limit of a classical GinzburgLandau functional ... 
Competition Between Pairing and Ferromagnetic Instabilities in Ultracold Fermi Gases Near Feshbach Resonances
Pekker, David; Babadi, Mehrtash; Sensarma, Rajdeep; Zinner, Nikolaj; Pollet, Lode; Zwierlein, Martin; Demler, Eugene A. (American Physical Society, 2011)We study the quench dynamics of a twocomponent ultracold Fermi gas from the weak into the strong interaction regime, where the short time dynamics are governed by the exponential growth rate of unstable collective modes. ... 
Competition between triplet superconductivity and antiferromagnetism in quasionedimensional electron systems
Podolsky, Daniel; Altman, Ehud; Rostunov, Timofey; Demler, Eugene A. (American Physical Society (APS), 2004)We investigate the competition between antiferromagnetism and triplet superconductivity in quasionedimensional electron systems. We show that the two order parameters can be unified using a SO(4) symmetry and demonstrate ...