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Dynamical Unbinding Transition in a Periodically Driven Mott Insulator | | Fabian Hassler
; Andreas Rüegg
; Manfred Sigrist
; Gianni Blatter
; | | Date: |
16 Feb 2010 | | Abstract: | We study the double occupancy in a fermionic Mott insulator at half-filling
generated via a dynamical periodic modulation of the hopping amplitude. Tuning
the modulation amplitude, we describe a crossover in the nature of
doublon-holon excitations from a Fermi Golden Rule regime to damped Rabi
oscillations. The decay time of excited states diverges at a critical
modulation strength, signaling the transition to a dynamically bound
non-equilibrium state of doublon-holon pairs. A setup using a fermionic quantum
gas should allow to study the critical exponents. | | Source: | arXiv, 1002.3085 | | Services: | Forum | Review | PDF | Favorites | |
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