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- Karlsruhe Institute of TechnologyDE6 papers
- Massachusetts Institute of TechnologyUS6 papers
- University of California, Santa BarbaraUS5 papers
- California Institute of TechnologyUS3 papers
- Centre National de la Recherche ScientifiqueFR3 papers
- Goethe University FrankfurtDE3 papers
- Laboratoire de physique des SolidesFR3 papers
- Université Paris-SudFR3 papers
- University of California, BerkeleyUS3 papers
- University of ChicagoUS3 papers
- Albert Einstein College of MedicineUS2 papers
- Center for Theoretical Biological PhysicsUS2 papers
6 papers · 1 filter
Mott insulator to superfluid transition of ultracold bosons in an optical lattice near a Feshbach resonance
K. Sengupta, N. Dupuis
We study the phase diagram of ultracold bosons in an optical lattice near a Feshbach resonance. Depending on the boson density, the strength of the optical lattice potential and th…
Renormalization Group Approach to Strong-Coupled Superconductors
S. -W. Tsai, A. H. Castro Neto, R. Shankar +1
We develop an asymptotically exact renormalization group (RG) approach that treats electron-electron and electron-phonon interactions on equal footing. The approach allows an unbia…
Universal conductance of nanowires near the superconductor-metal quantum transition
Subir Sachdev, Philipp Werner, Matthias Troyer
We consider wires near a zero temperature transition between superconducting and metallic states. The critical theory obeys hyperscaling, which leads to a universal frequency, temp…
Fractional ac Josephson effect in unconventional superconductors
Hyok-Jon Kwon, K. Sengupta, Victor M. Yakovenko
For certain orientations of Josephson junctions between two p_x-wave or two d-wave superconductors, the subgap Andreev bound states produce a 4pi-periodic relation between the Jose…
Direct Observation of Dynamical Switching between Two Driven Oscillation States of a Josephson Junction
I. Siddiqi, R. Vijay, F. Pierre +8
We performed a novel phase sensitive microwave reflection experiment which directly probes the dynamics of the Josephson plasma resonance in both the linear and non-linear regime.…
Conductivity of thermally fluctuating superconductors in two dimensions
Subir Sachdev
We review recent work on a continuum, classical theory of thermal fluctuations in two dimensional superconductors. A functional integral over a Ginzburg-Landau free energy describe…