The BCS–BEC crossover: From ultra-cold Fermi gases to nuclear systems

GC Strinati, P Pieri, G Röpke, P Schuck, M Urban - Physics Reports, 2018 - Elsevier
This report addresses topics and questions of common interest in the fields of ultra-cold
gases and nuclear physics in the context of the BCS–BEC crossover. By this crossover, the …

Crossover from Bardeen-Cooper-Schrieffer to Bose-Einstein condensation and the unitary Fermi gas

M Randeria, E Taylor - Annu. Rev. Condens. Matter Phys., 2014 - annualreviews.org
The crossover from weak-coupling Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-
Einstein condensate (BEC) of tightly bound pairs, as a function of the attractive interaction in …

Universal quantum viscosity in a unitary Fermi gas

C Cao, E Elliott, J Joseph, H Wu, J Petricka, T Schäfer… - Science, 2011 - science.org
A Fermi gas of atoms with resonant interactions is predicted to obey universal
hydrodynamics, in which the shear viscosity and other transport coefficients are universal …

General relations for quantum gases in two and three dimensions: Two-component fermions

F Werner, Y Castin - Physical Review A—Atomic, Molecular, and Optical …, 2012 - APS
We derive exact general relations between various observables for N spin-1/2 fermions with
zero-range or short-range interactions, in continuous space or on a lattice, in two or three …

Strongly interacting two-dimensional Fermi gases

J Levinsen, MM Parish - Annual review of cold atoms and …, 2015 - World Scientific
We review the current understanding of the uniform two-dimensional (2D) Fermi gas with
short-range interactions. We first outline the basics of two-body scattering in 2D, including a …

Ground-state pressure of quasi-2D Fermi and Bose gases

V Makhalov, K Martiyanov, A Turlapov - Physical review letters, 2014 - APS
Using an ultracold gas of atoms, we have realized a quasi-two-dimensional Fermi system
with widely tunable s-wave interactions nearly in a ground state. Pressure and density are …

Sound propagation and quantum-limited dam** in a two-dimensional Fermi gas

M Bohlen, L Sobirey, N Luick, H Biss, T Enss… - Physical Review Letters, 2020 - APS
Strongly interacting two-dimensional Fermi systems are one of the great remaining
challenges in many-body physics due to the interplay of strong local correlations and …

Anomalous breaking of scale invariance in a two-dimensional Fermi gas

M Holten, L Bayha, AC Klein, PA Murthy, PM Preiss… - Physical review …, 2018 - APS
The frequency of the breathing mode of a two-dimensional Fermi gas with zero-range
interactions in a harmonic confinement is fixed by the scale invariance of the Hamiltonian …

Upper bound on diffusivity

T Hartman, SA Hartnoll, R Mahajan - Physical Review Letters, 2017 - APS
The linear growth of operators in local quantum systems leads to an effective light cone even
if the system is nonrelativistic. We show that the consistency of diffusive transport with this …

Quantum Anomaly, Universal Relations, and Breathing Mode<? format?> of a Two-Dimensional Fermi Gas

J Hofmann - Physical review letters, 2012 - APS
In this Letter, we show that the classical SO (2, 1) symmetry of a harmonically trapped Fermi
gas in two dimensions is broken by quantum effects. The anomalous correction to the …