Comparison between a diagrammatic theory for the BCS-BEC crossover and Quantum Monte Carlo results
P. Pieri, L. Pisani, G. C. Strinati
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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