Dynamical Unbinding Transition in a Periodically Driven Mott Insulator

Details Dynamical Unbinding Transition in a Periodically Driven Mott Insulator Dynamical Unbinding Transition in a Periodically Driven Mott Insulator

2010-02-16

arxiv.org/abs/1002.3085v1

Phys. Rev. Lett. 104, 220402 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.104.220402

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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