Angle-resolved photoemission spectra in the cuprates from the d-density wave theory

TL;DR

This paper addresses key discrepancies between the d-density wave theory and experimental photoemission data in cuprates, proposing resolutions to observed contradictions regarding hole pockets and quasiparticles.

Contribution

It offers a new explanation within the DDW framework that reconciles theory with experimental observations of the pseudogap state.

Findings

Hole pockets near (π/2,π/2) are not observed experimentally.

No well-defined quasiparticles at antinodal points are found.

Resolutions to the apparent contradictions in DDW theory are proposed.

Abstract

Angle-resolved photoemission spectra present two challenges for the d-density wave (DDW) theory of the pseudogap state of the cuprates: (1) hole pockets near $(\pi/2,\pi/2)$ are not observed, in apparent contradiction with the assumption of translational symmetry breaking, and (2) there are no well-defined quasiparticles at the {\it antinodal} points, in contradiction with the predictions of mean-field theory of this broken symmetry state. Here, we show how these puzzles can be resolved.