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31 papers · 1 filter
Chaos assisted tunnelling with cold atoms
A. Mouchet, C. Miniatura, R. Kaiser +2
In the context of quantum chaos, both theory and numerical analysis predict large fluctuations of the tunnelling transition probabilities when irregular dynamics is present at the…
Atomic Energy Levels with QED and Contribution of the Screened Self-Energy
Eric-Olivier Le Bigot, Paul Indelicato
We present an introduction to the principles behind atomic energy level calculations with Quantum Electrodynamics (QED) and the two-time Green's function method; this method allows…
Interatomic collisions in a tightly confined Bose gas
D. S. Petrov, G. V. Shlyapnikov
We discuss pair interatomic collisions in a Bose gas tightly confined in one (axial) direction and identify two regimes of scattering. In the quasi2D regime, where the confinement…
Bose-Einstein condensates in symmetry breaking states
Yvan Castin, Christopher Herzog
We consider two models of interacting Bose gases: a gas of spin one particles in the ground state of a cubic box and a one-dimension Bose gas with contact interactions. We show how…
Tunable whispering gallery modes for spectroscopy and CQED experiments
Wolf von Klitzing, Romain Long, Vladimir S. Ilchenko +2
We have tuned the whispering gallery modes of a fused silica micro- resonator over nearly 1 nm at 800 nm, i.e.over half of a free spectral range or the equivalent of 10^6 linewidth…
Rotating fermions in two dimensions: Thomas Fermi approach
Sankalpa Ghosh, M. V. N. Murthy, Subhasis Sinha
Properties of confined mesoscopic systems have been extensively studied numerically over recent years. We discuss an analytical approach to the study of finite rotating fermionic s…