Imaginary chemical potential induces a mapping that turns the BCS-BEC crossover of attractive fermions into a Bose-Fermi crossover for repulsive bosons via a simple phase shift in the thermal kernel.
Filothodoros, Anastasios C
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The BCS-BEC crossover in the 1D large-N attractive Fermi-Hubbard model with imaginary chemical potential is governed by iθ, a thermal kernel g(βE_k, βθ), and δ_u, with a thermal window at unitarity where the gap vanishes but N_f extremizes.
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Bose-Fermi Mapping in Hubbard Models at Imaginary Chemical Potential and Phase-Induced Fermionization
Imaginary chemical potential induces a mapping that turns the BCS-BEC crossover of attractive fermions into a Bose-Fermi crossover for repulsive bosons via a simple phase shift in the thermal kernel.
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Thermal Phase Structure of the Attractive Fermi Hubbard Model with Imaginary Chemical Potential
The BCS-BEC crossover in the 1D large-N attractive Fermi-Hubbard model with imaginary chemical potential is governed by iθ, a thermal kernel g(βE_k, βθ), and δ_u, with a thermal window at unitarity where the gap vanishes but N_f extremizes.