#### Condensed Matter Theory

### Niklas Teichmann et.al.: Fractional photon-assisted tunneling for Bose-Einstein condensates in a double well

**Author(s)**:**Niklas Teichmann, Martin Esmann, Christoph Weiss****Title**:**Date of Upload**: 2009-05-18
**Article**:**Phys. Rev. A 79, 063620 (2009)****Keywords**: ouble-well potential, photon-assisted tunneling, Bose-Einstein condensation**PACS**: 03.75.Lm, 74.50.+r, 03.65.Xp**Abstract**:- Half-integer photon-resonances in a periodically shaken double well are investigated on the level of the N-particle quantum dynamics. Contrary to non-linear mean-field equations, the linear N-particle Schrodinger equation does not contain any non-linearity which could be the origin of such resonances. Nevertheless, analytic calculations on the N-particle level explain why such resonances can be observed even for particle numbers as low as N = 2. These calculations also demonstrate why fractional photon resonances are not restricted to half-integer values.
**Copyright**: APS**URL: http://de.arxiv.org/abs/0905.2838 (text/plain)**

**Fractional photon-assisted tunneling for Bose-Einstein condensates in a double well**

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