Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012phrvl.108c3001m&link_type=abstract
Physical Review Letters, vol. 108, Issue 3, id. 033001
Astronomy and Astrophysics
Astrophysics
1
Mechanical Effects Of Light On Atoms, Molecules, And Ions, Quantum Optical Phenomena In Absorbing, Dispersive And Conducting Media, Electromagnetic Waves, Radiative Transfer, Scattering
Scientific paper
We show that static and oscillating photon bubbles can be excited by diffused light in the laser cooled matter confined in a magneto-optical trap. The bubble instability is due to the coupling between the radiation field and the mean field oscillations of the ultracold gas, and it can provide a source for low frequency turbulence. We consider a diffusion-dominated regime, which can be described by a radiation transport equation, coupled with the mean field equations for the cold atom gas. A perturbative analysis shows the occurrence of two different regimes with either oscillating or purely growing bubbles. This work could also be useful to understand similar processes in astrophysics.
Kaiser Robert
Mendonca Tito J.
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