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The Field Perturbation Theory of Pseudogaps in HTSC

Moshe Dayan
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Abstract

Here I establish the field perturbation theory of pseudogaps in HTSC. The proposed ground state suggests an internal particle-hole field, which is normal to nesting surfaces, and having twice the Fermi wave-number. It is proved that the system violates momentum conservation by the wave-vector of this internal field. This violation applies to the quasi-particle propagators, as well as to the interactions. Interaction vertices via the Pauli matrix- are established. This, in turn, establishes the validity of the pseudogap Hartree self-energy.

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Moshe Dayan. 2007-01-17. The Field Perturbation Theory of Pseudogaps in HTSC. https://doi.org/10.1007/s10948-006-0184-5

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