期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.086401
关键词
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资金
- NSF [DMR-0906943]
- Swiss National Foundation for Science
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0906943] Funding Source: National Science Foundation
We study the steady-state dynamics of the Hubbard model driven out of equilibrium by a constant electric field and coupled to a dissipative heat bath. For a very strong field, we find a dimensional reduction: the system behaves as an equilibrium Hubbard model in lower dimensions. We derive steady-state equations for the dynamical mean-field theory in the presence of dissipation. We discuss how the electric field induced dimensional crossover affects the momentum resolved and integrated spectral functions, the energy distribution function, as well as the steady current in the nonlinear regime.
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