A general quantity from Landau free energy shows superradiant transitions can enhance or suppress fermionic pairing and superconducting gaps in two-order-parameter systems, as verified in Rabi and Dicke models.
In classic oscillator limit, the covariance term can be safely ignored asb †cσx,y 1,2 ≈ ⟨b⟩ ∗ ⟨c⟩σ x,y 1,2
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Superradiance enhances and suppresses fermionic pairing based on universal critical scaling in two order parameters systems
A general quantity from Landau free energy shows superradiant transitions can enhance or suppress fermionic pairing and superconducting gaps in two-order-parameter systems, as verified in Rabi and Dicke models.