Dynamical Unbinding Transition in a Periodically Driven Mott Insulator

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.

4 pages, 2 figures

References in corpus (8)

• A Mott insulator of fermionic atoms in an optical lattice
• Repulsively bound atom pairs in an optical lattice
• Observation of Elastic Doublon Decay in the Fermi-Hubbard Model
• Modulation spectroscopy with ultracold fermions in an optical lattice
• Dynamically Generated Double Occupancy as a Probe of Cold Atom Systems
• Modulation Spectroscopy and Dynamics of Double Occupancies in a Fermionic Mott Insulator
• Hopping modulation in a one-dimensional Fermi-Hubbard Hamiltonian
• Coherent pumping of a Mott insulator: Fermi golden rule versus Rabi oscillations

Cited by in corpus (8)

• Doublon relaxation in the Bose-Hubbard model
• Effects of non-equilibrium noise on a quantum memory encoded in Majorana zero modes
• Quantum interference-induced stability of repulsively bound pairs of excitations
• Theoretical Description of Coherent Doublon Creation via Lattice Modulation Spectroscopy
• Low-energy doublons in the ac-driven two-species Hubbard model
• Relaxation of Fermionic Excitations in a Strongly Attractive Fermi Gas in an Optical Lattice
• Feshbach modulation spectroscopy
• Field-induced ferromagnetism in one-dimensional tight-binding lattices