Mean-field dynamics of a non-Hermitian Bose-Hubbard dimer
| Autor: | Hans Jürgen Korsch, Eva-Maria Graefe, A. E. Niederle |
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| Rok vydání: | 2008 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Quantum Physics Dimer General Physics and Astronomy FOS: Physical sciences Fixed point Hermitian matrix Condensed Matter - Other Condensed Matter Nonlinear system chemistry.chemical_compound Particle decay Mean field theory chemistry Quantum mechanics Coherent states Quantum Physics (quant-ph) Eigenvalues and eigenvectors Other Condensed Matter (cond-mat.other) |
| DOI: | 10.48550/arxiv.0807.1777 |
| Popis: | We investigate an $N$-particle Bose-Hubbard dimer with an additional effective decay term in one of the sites. A mean-field approximation for this non-Hermitian many-particle system is derived, based on a coherent state approximation. The resulting nonlinear, non-Hermitian two-level dynamics, in particular the fixed point structures showing characteristic modifications of the self-trapping transition, are analyzed. The mean-field dynamics is found to be in reasonable agreement with the full many-particle evolution. Comment: 4 pages, 3 figures, published version |
| Databáze: | OpenAIRE |
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