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arXiv · 1002.3085

Dynamical Unbinding Transition in a Periodically Driven Mott Insulator

Fabian Hassler·Andreas Rüegg·Manfred Sigrist·Gianni Blatter
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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.

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Fabian Hassler, Andreas Rüegg, Manfred Sigrist, Gianni Blatter. 2010-02-16. Dynamical Unbinding Transition in a Periodically Driven Mott Insulator. https://doi.org/10.1103/physrevlett.104.220402

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