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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
The Josephson plasmon as a Bogoliubov quasiparticleGheorghe-Sorin Paraoanu, Sigmund Kohler, Fernando Sols, and Anthony J. LeggettJ. Phys. B 34, 4689 (2001) We study the Josephson effect in alkali atomic gases within the two-mode approximation and show that there is a correspondence between the Bogoliubov description and the harmonic limit of the phase representation. We demonstrate that the quanta of the Josephson plasmon can be identified with the Bogoliubov excitations of the two-site Bose fluid. We thus establish a mapping between the Bogoliubov approximation for the many-body theory and the linearized pendulum Hamiltonian. arXiv:cond-mat/0108551 |
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last modified: 15.3.2024 by
Sigmund Kohler