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Article Dans Une Revue Annales Henri Poincaré Année : 2009

The Effect of Time-Dependent Coupling on Non-Equilibrium Steady States

Résumé

Consider (for simplicity) two one-dimensional semi-infinite leads coupled to a quantum well via time dependent point interactions. In the remote past the system is decoupled, and each of its components is at thermal equilibrium. In the remote future the system is fully coupled. We define and compute the non equilibrium steady state (NESS) generated by this evolution. We show that when restricted to the subspace of absolute continuity of the fully coupled system, the state does not depend at all on the switching. Moreover, we show that the stationary charge current has the same invariant property, and derive the Landau-Lifschitz and Landauer-Buttiker formulas.

Dates et versions

hal-00173968 , version 1 (21-09-2007)

Identifiants

Citer

Horia D. Cornean, Hagen Neidhardt, Valentin A. Zagrebnov. The Effect of Time-Dependent Coupling on Non-Equilibrium Steady States. Annales Henri Poincaré, 2009, 10 (1), pp.61-93. ⟨10.1007/s00023-009-0400-5⟩. ⟨hal-00173968⟩
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