Decay by tunneling of Bosonic and Fermionic Tonks-Girardeau Gases

Details Decay by tunneling of Bosonic and Fermionic Tonks-Girardeau Gases Decay by tunneling of Bosonic and Fermionic Tonks-Girardeau Gases

2006-05-16

arxiv.org/abs/quant-ph/0605139v1

Phys. Rev. A 74, 013605 (2006)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.74.013605

We study the tunneling dynamics of bosonic and fermionic Tonks-Girardeau gases from a hard wall trap, in which one of the walls is substituted by a delta potential. Using the Fermi-Bose map, the decay of the probability to remain in the trap is studied as a function of both the number of particles and the intensity of the end-cap delta laser. The fermionic gas is shown to be a good candidate to study deviations of the non-exponential decay of the single-particle type, whereas for the bosonic case a novel regime of non-exponential decay appears due to the contributions of different resonances of the trap.

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