O(4)-Invariant Formulation of the Nodal Liquid

Abstract

We consider the O(4) symmetric point in the phase diagram of an electron system in which there is a transition between d_{x^2 - y^2} density-wave order and d_{x^2 - y^2} superconductivity. If the pseudospin $SU(2)\subset O(4)$ symmetry is disordered by quantum fluctuations, the Nodal Liquid can result. In this context, we (1) construct a pseudospin $\sigma$-model; (2) discuss its topological excitations; (3) point out the possibility of a {\it pseudospin-Peierls} state and (4) propose a phase diagram for the underdoped cuprate superconductors.

References in corpus (2)

• Density Wave States of Non-Zero Angular Momentum
• Confinement of Slave-Particles in U(1) Gauge Theories of Strongly-Interacting Electrons

Cited by in corpus (16)

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• Pseudogap, Superconducting Energy Scale, and Fermi Arcs in Underdoped Cuprate Superconductors
• Charge orders, magnetism and pairings in the cuprate superconductors
• Effective SU(2) theory for the pseudogap state
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• Local particle-hole pair excitations by SU(2) symmetry fluctuations
• Influence of the pseudogap on the superconductivity-induced phonon renormalization in high-T${}_c$ superconductors
• Downward shift of infrared conductivity spectral weight at the DDW transition: role of anisotropy
• Local enhancement of spin and orbital antiferromagnetism around a single vortex in high-Tc superconductors