Pseudogap and spectral function from superconducting fluctuations to the bosonic limit
Pseudogap and spectral function from superconducting fluctuations to the bosonic limit
The crossover from weak to strong coupling for a three dimensional continuum model of fermions interacting via an attractive contact potential is studied above the superconducting critical temperature. The pair-fluctuation propagator, the one-loop self-energy, and the spectral function are investigated in a systematic way from the superconducting fluctuation regime (weak …