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Comparison between a diagrammatic theory for the BCS-BEC crossover and Quantum Monte Carlo results

P. Pieri·L. Pisani·G. C. Strinati
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Abstract

Predictions for the chemical potential and the excitation gap recently obtained by our diagrammatic theory for the BCS-BEC crossover in the superfluid phase are compared with novel Quantum Monte Carlo results at zero temperature now available in the literature. A remarkable agreement is found between the results obtained by the two approaches

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P. Pieri, L. Pisani, G. C. Strinati. 2004-10-22. Comparison between a diagrammatic theory for the BCS-BEC crossover and Quantum Monte Carlo results. https://doi.org/10.1103/physrevb.72.012506

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