Magnetic properties of one-dimensional Fermi gases in an optical cavity
| Autor: | Fan Jing-Tao, Feng Yan-Lin, Chen Gang, Jia Suo-Tang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Work (thermodynamics) Photon Condensed matter physics Phase (waves) Physics::Optics General Physics and Astronomy Superradiance Spin structure law.invention law Optical cavity Physics::Accelerator Physics Physics::Atomic Physics Phase diagram Fermi Gamma-ray Space Telescope |
| Zdroj: | Acta Physica Sinica. 68:043702 |
| ISSN: | 1000-3290 |
| DOI: | 10.7498/aps.68.20181954 |
| Popis: | In this work we show that the superradiance of the cavity photons can give rise to a magnetic transformation for the atomic system when the quasi one-dimensional Fermi gases are coupled to an optical cavity. This magnetic transformation has a close relationship with the atomic detuning and the filling number. When the interaction between the atoms is neglected, the mean-field approximation may be used in the superradiant phase. In this approximation, we analyze the static spin structure factors of the system with different filling numbers and atomic detuning. Then we characterize the cavity photons-assisted magnetic transformation and obtain the phase diagrams which are dependent on the cavity parameters. Finally, the feasible experimental parameters of our results are also discussed. |
| Databáze: | OpenAIRE |
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