Dynamical localization of a particle coupled to a two-level systems thermal reservoir

Details Dynamical localization of a particle coupled to a two-level systems thermal reservoir Dynamical localization of a particle coupled to a two-level systems thermal reservoir

2007-07-15

arxiv.org/abs/0707.2213v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Using the functional-integral method, we investigate the effect of a two-level systems thermal reservoir on the single particle dynamics. We find that at low temperatures, within the sub-ohmic regime, the particle becomes {}``dynamically'' localized at long times due to an effective potential generated by the particle-reservoir interaction. This behavior is different from the one obtained for the usual bath of harmonic oscillators and is fundamentally related with the non-Markovian character of the dissipative process.

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