Abstract The phenomenon of Bose-Einstein condensation of dilute gases in traps is
reviewed from a theoretical perspective. Mean-field theory provides a framework to …

This review discusses progress in the new field of coherent matter waves, particularly with
respect to Bose–Einstein condensates. We give a short introduction to Bose–Einstein …

The literature on the spectral analysis of second order elliptic differential operators contains
a great deal of information on the spectral functions for explicitly known spectra. The same is …

We report measurements of particle number correlations and fluctuations of a photon Bose-
Einstein condensate in a dye microcavity using a Hanbury Brown-Twiss experiment. The …

Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas Page 1
Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas C.-S …

We find that the fluctuations of the condensate in a weakly interacting Bose gas confined in a
box of volume V follow the law< δ N 0 2>∼ V 4/3. This anomalous behavior arises from the …

Fluctuations are a key property of both classical and quantum systems. While the
fluctuations are well understood for many quantum systems at zero temperature, the case of …

We discuss the exact particle number counting statistics of degenerate ideal Bose gases in
the microcanonical, canonical, and grand-canonical ensemble, respectively, for various …

Abstract Experiments with Bose–Einstein condensates of dilute atomic gases require
temperatures as low as hundreds of nanokelvins but obviously cannot be performed at zero …

The functional determinant approach (FDA) is a simple method to compute exactly certain
observables for ideal quantum systems and has been successfully applied to the Fermi …