arXiv Open Access 2010

Evolution of the Pseudogap in a polarized Fermi gas

Erich J. Mueller

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Abstrak

We calculate the single particle spectral density of a normal (non-superfluid) two component gas of fermions in the BCS-BEC crossover within a T-matrix approximation. We review how non-condensed pairs lead to a spectral density reminiscent of the ordered state, and explore how a gap-like feature in the spectrum evolves as one changes the polarization of the gas. As the gas is polarized we find that this pseudogap becomes more diffuse and moves away from the Fermi level, reflecting the fact that fewer pairs are present but that they still play an important role in the excitations.

Topik & Kata Kunci

cond-mat.quant-gas cond-mat.supr-con

Penulis (1)

Erich J. Mueller

Format Sitasi

APA MLA BibTeX

Mueller, E.J. (2010). Evolution of the Pseudogap in a polarized Fermi gas. https://arxiv.org/abs/1012.0820

Akses Cepat

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Informasi Jurnal

Tahun Terbit: 2010
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓