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Cooper pairs as low-energy excitations in the normal state

We discuss the normal state of a fermionic system in an idealized PSEUDOGAP REGIME, $k_B T_c < k_B T << |Δ| << E_F$. Stable Cooper pairs induce a pseudogap of width $|Δ|$ in the fermion energy spectrum. Near two dimensions, we find a Bose-like condensation temperature in this predominantly fermionic system.

preprint1997arXivOpen access

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