Dynamical quantum phase transition of a two-component Bose-Einstein condensate in an optical lattice

Details Dynamical quantum phase transition of a two-component Bose-Einstein condensate in an optical lattice Dynamical quantum phase transition of a two-component Bose-Einstein condensate in an optical lattice

2009-08-19

arxiv.org/abs/0908.2792v1

Phys. Rev. A 81, 013603 (2010).

Physics

Condensed Matter

Quantum Gases

8 pages, 8 figures

Scientific paper

We study dynamics of a two-component Bose-Einstein condensate where the two components are coupled via an optical lattice. In particular, we focus on the dynamics as one drives the system through a critical point of a first order phase transition characterized by a jump in the internal populations. Solving the time-dependent Gross-Pitaevskii equation, we analyze; breakdown of adiabaticity, impact of non-linear atom-atom scattering, and the role of a harmonic trapping potential. Our findings demonstrate that the phase transition is resilient to both contact interaction between atoms and external trapping confinement.

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