Nota de FísicaPublicado
Entangled States and Super-radiant Phase Transition
M. Aparicio Alcalde; V. B. Bezerra; A. H. Cardenas
Dados da publicação
- Autores
- M. Aparicio Alcalde; V. B. Bezerra; A. H. Cardenas
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 17/08/2009
- Descrição
- The Dicke spin-boson model is composed by a single bosonic mode and an ensemble of $N$ identical two-level atoms. Assuming thermal equilibrium with a reservoir at temperature $\beta^{-1}$, we consider the situation where the coupling between the bosonic mode and the atoms generates resonant and non-resonant processes. The thermodynamic of the model is investigated. Next we introduce dipole-dipole interaction between the atoms. We investigate the transition from fluorescent to super-radiant phase and the quantum phase transition in a situation where the dipole-dipole interaction between the atoms generates entangled states in the atomic system. We proved that, the critical behavior is not modified by the introduction of the dipole-dipole interaction.
- Ano
- 2009
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não