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72 papers · 1 filter
Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets
Katarina Karlova, Afonso Rufino, Taras Verkholyak +5
We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2d quantum…
Shifted-Action Expansion and Applicability of Dressed Diagrammatic Schemes
Riccardo Rossi, Felix Werner, Nikolay Prokof'ev +1
While bare diagrammatic series are merely Taylor expansions in powers of interaction strength, dressed diagrammatic series, built on fully or partially dressed lines and vertices,…
Ground state energy of the two-dimensional weakly interacting Bose gas: First correction beyond Bogoliubov theory
Christophe Mora, Yvan Castin
We consider the grand potential of a two-dimensional weakly interacting homogeneous Bose gas at zero temperature. Building on a number-conserving Bogoliubov method for a lattic…
Crystalline phase of strongly interacting Fermi mixtures
D. S. Petrov, G. E. Astrakharchik, D. J. Papoular +2
We show that the system of weakly bound molecules of heavy and light fermionic atoms is characterized by a long-range intermolecular repulsion and can undergo a gas-crystal quantum…
Mapping Nonequilibrium onto Equilibrium: The Macroscopic Fluctuations of Simple Transport Models
Julien Tailleur, Jorge Kurchan, Vivien Lecomte
We study a simple transport model driven out of equilibrium by reservoirs at the boundaries, corresponding to the hydrodynamic limit of the symmetric simple exclusion process. We s…
Normal state of highly polarized Fermi gases: simple many-body approaches
R. Combescot, A. Recati, C. Lobo +1
We consider the problem of a single \down atom in the presence of a Fermi sea of \up atoms, in the vicinity of a Feshbach resonance. We calculate the chemical potential and the eff…