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- National Institute of Standards and TechnologyUS36 papers
- United States Naval Research LaboratoryUS30 papers
- Stanford UniversityUS29 papers
- University of Maryland, College ParkUS29 papers
- SLAC National Accelerator LaboratoryUS26 papers
- Institute of PhysicsPL25 papers
- Centre National de la Recherche ScientifiqueFR24 papers
- Pennsylvania State UniversityUS24 papers
- University of MichiganUS24 papers
- Joint Quantum InstituteUS23 papers
- Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of UkraineUA21 papers
- North Carolina State UniversityUS20 papers
8 papers · 1 filter
Strong-coupling perturbation theory for the two-dimensional Bose-Hubbard model in a magnetic field
M. Niemeyer, J. K. Freericks, H. Monien
The Bose-Hubbard model in an external magnetic field is investigated with strong-coupling perturbation theory. The lowest-order secular equation leads to the problem of a charged p…
Single-Particle Excitations in a Two-Dimensional Strong-Coupling Superconductor
D. W. Hess, J. J. Deisz, J. W. Serene
We present calculations of the single-particle excitation spectrum for a 2D strong-coupling superconductor in a conserving approximation. Spectral weight at low frequency is substa…
Clustering, Order, and Collapse in a Driven Granular Monolayer
J. S. Olafsen, J. S. Urbach
Steady state dynamics of clustering, long range order, and inelastic collapse are experimentally observed in vertically shaken granular monolayers. At large vibration amplitudes, p…
Vertex-corrected perturbation theory for the electron-phonon problem with non-constant density of states
J. K. Freericks, V. Zlatic', Woonki Chung +1
A series of weak-coupling perturbation theories which include the lowest-order vertex corrections are applied to the attractive Holstein model in infinite dimensions. The approxima…
Reevaluating electron-phonon coupling strengths: Indium as a test case for ab initio and many-body-theory methods
Sven P. Rudin, R. Bauer, Amy Y. Liu +1
Using indium as a test case, we investigate the accuracy of the electron-phonon coupling calculated with state-of-the-art ab initio and many-body theory methods. The ab initio calc…
What are the experimentally observable effects of vertex corrections in superconductors?
P. Miller, J. K. Freericks, E. J. Nicol
We calculate the effects of vertex corrections, of non-constant density of states and of a (self-consistently determined) phonon self-energy for the Holstein model on a 3D cubic la…