Quantum charge glasses of itinerant fermions with cavity-mediated long-range interactions
arXiv:1205.4027 · doi:10.1103/PhysRevA.86.023604
Abstract
We study models of itinerant spinless fermions with random long-range interactions. We motivate such models from descriptions of fermionic atoms in multi-mode optical cavities. The solution of an infinite-range model yields a metallic phase which has glassy charge dynamics, and a localized glass phase with suppressed density of states at low energies. We compare these phases to the conventional disordered Fermi liquid, and the insulating electron glass of semiconductors. Prospects for the realization of such glassy phases in cold atom systems are discussed.
16 pages
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- Effective theory for matter in non-perturbative cavity QED
- A cavity-induced artificial gauge field in a Bose-Hubbard ladder
- The effect of active photons on dynamical frustration in cavity QED
- Critical Behavior of a Strongly Disordered 2D Electron System: The Cases of Long-Range and Screened Coulomb Interactions
- Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications
- Anomalous 2D-confined electronic transport in layered organic charge-glass systems
- Cooper pair polaritons in cold fermionic atoms within a cavity
- Fluctuation driven transitions in localized insulators: Intermittent metallicity and path chaos precede delocalization