Hidden Fermi Liquid: The Secret of High Tc Cuprates

TL;DR

This paper introduces a formalism to analyze the effects of Gutzwiller projection in high-Tc cuprates, proposing a hidden Fermi liquid state that explains anomalous normal state properties.

Contribution

It presents a novel approach to incorporate Gutzwiller projection effects directly, revealing a hidden Fermi liquid underlying the strange metal phase in cuprates.

Findings

Predicts anomalous properties of the strange metal state

Shows the normal state is a Z=0 non-Fermi liquid

Aligns theoretical predictions with experimental observations

Abstract

I present a formalism for dealing directly with the effects of the Gutzwiller projection, which is implicit in the t-J model widely believed to underly the phenomenology of the high-Tc cuprates. I suggest that a true BCS condensation from a Fermi liquid state takes place, but in the unphysical space prior to projection. The theory which results upon projection does not follow conventional rules of diagram theory and in fact in the normal state is a Z=0 non-Fermi liquid. Anomalous properties of this strange metal normal state are predicted and compared to experiments.