期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.143002
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资金
- EPSRC [EP/J017639/1, EP/I031014/1, EP/G004714/2]
- National Science Foundation [NSF PHY11-25915]
- EPSRC [EP/I031014/1, EP/G004714/1, EP/G004714/2, EP/J017639/1, EP/F032773/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G004714/2, EP/I031014/1, EP/F032773/1, EP/J017639/1, EP/G004714/1] Funding Source: researchfish
Following the experimental realization of Dicke superradiance in Bose gases coupled to cavity light fields, we investigate the behavior of ultracold fermions in a transversely pumped cavity. We focus on the equilibrium phase diagram of spinless fermions coupled to a single cavity mode and establish a zero temperature transition to a superradiant state. In contrast to the bosonic case, Pauli blocking leads to lattice commensuration effects that influence self-organization in the cavity light field. This includes a sequence of discontinuous transitions with increasing atomic density and tricritical superradiance. We discuss the implications for experiment.
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