Pairing of the Pöschl-Teller gas

Hsuan-Hao Fan; E. Krotscheck

doi:10.1007/s10909-018-02117-y

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arXiv · 1807.05643

Pairing of the Pöschl-Teller gas

Hsuan-Hao Fan·E. Krotscheck

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Abstract

We report calculations of equation of state of a model system, representative for a cold Fermi gas, of particles interacting via the Pöschl-Teller interaction. In successively more sophisticated calculations, we determine the importance of correlations and non-localities. We show that the gas displays, at relatively low density, an instability indicated by a divergence of the in-medium scattering length which occurs well before the divergence of the vacuum scattering length and the spinodal density. We also calculate the pairing gap and show that non-local correlations can change the pairing gap by almost an order of magnitude.

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cond-mat.quant-gas cond-mat.str-el cond-mat.supr-con nucl-th quant-ph

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BibTeX RIS

Hsuan-Hao Fan, E. Krotscheck. 2018-12-15. Pairing of the Pöschl-Teller gas. https://doi.org/10.1007/s10909-018-02117-y

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