Crossover from Non-Equilibrium to Equilibrium Behavior in the Time-Dependent Kondo Model
We investigate the equilibration of a Kondo model that is initially prepared in a non-equilibrium state towards its equilibrium behavior. Such initial non-equilibrium states can e.g. be realized in quantum dot experiments with time-dependent gate voltages. We evaluate the non-equilibrium spin-spin c...
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| Veröffentlicht in: | arXiv.org 2004-08 |
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| creator | Lobaskin, D Kehrein, S |
| description | We investigate the equilibration of a Kondo model that is initially prepared in a non-equilibrium state towards its equilibrium behavior. Such initial non-equilibrium states can e.g. be realized in quantum dot experiments with time-dependent gate voltages. We evaluate the non-equilibrium spin-spin correlation function at the Toulouse point of the Kondo model exactly and analyze the crossover between non-equilibrium and equilibrium behavior as the non-equilibrium initial state evolves as a function of the waiting time for the first spin measurement. Using the flow equation method we extend these results to the experimentally relevant limit of small Kondo couplings. |
| doi_str_mv | 10.48550/arxiv.0405193 |
| format | Article |
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| subjects | Couplings Crossovers Equilibrium Flow equations Game theory Quantum dots Time dependence |
| title | Crossover from Non-Equilibrium to Equilibrium Behavior in the Time-Dependent Kondo Model |
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