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Abstract: We study a mixture of two light spin-1-2 fermionic atoms and two heavy atoms%in a Mott state in a double well potential. Inelastic scattering processesbetween both atomic species excite the heavy atoms and renormalize thetunneling rate and the interaction of the light atoms polaron effect. Theeffective interaction of the light atoms changes its sign and becomesattractive for strong inelastic scattering. This is accompanied by a crossingof the energy levels from singly occupied sites at weak inelastic scattering toa doubly occupied and an empty site for stronger inelastic scattering. We areable to identify the polaron effect and the level crossing in the quantumdynamics.



Autor: E. S. Annibale, O. Fialko, K. Ziegler

Fuente: https://arxiv.org/







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