Analytical description of a trapped semi-ideal Bose gas at finite temperature

Condensate fluctuations of a trapped, ideal Bose gas.

For a non-self-interacting Bose gas with a fixed, large number of particles confined to a trap, as the ground-state occupation becomes macroscopic, the condensate number fluctuations remain microscopic. However, this is the only significant aspect in which the grand canonical description differs from canonical or microcanonical in the thermodynamic limit. General arguments and estimates includi...

Particle number fluctuations in a cloven trapped Bose gas at finite temperature

Temperature of a trapped unitary Fermi gas at finite entropy

We present theoretical predictions for the equation of state of a harmonically trapped Fermi gas in the unitary limit. Our calculations compare Monte Carlo results with the equation of state of a uniform gas using three distinct perturbation schemes. We show that in experiments the temperature can be usefully calibrated by making use of the entropy, which is invariant during an adiabatic conver...

Two-body anticorrelation in a harmonically trapped ideal Bose gas

T. M. Wright,1 A. Perrin,2,3 A. Bray,1 J. Schmiedmayer,4 and K. V. Kheruntsyan1 1The University of Queensland, School of Mathematics and Physics, Brisbane, Queensland 4072, Australia 2CNRS, UMR 7538, F-93430, Villetaneuse, France 3Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers, F-93430, Villetaneuse, France 4Vienna Center for Quantum Science and Technology, Atomins...

Atomic density of a harmonically trapped ideal gas near Bose-Einstein transition temperature

We have studied the atomic density of a cloud confined in an isotropic harmonic trap at the vicinity of the Bose-Einstein transition temperature. We show that, for a non-interacting gas and near this temperature, the ground-state density has the same order of magnitude as the excited states density at the centre of the trap. This holds in a range of temperatures where the ground-state populatio...