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Title: Evidence of a short-range incommensurate d-wave charge order from a fermionic two-loop renormalization group calculation of a 2D model with hot spots

The two-loop renormalization group (RG) calculation is considerably extended here for the two-dimensional (2D) fermionic effective field theory model, which includes only the so-called “hot spots” that are connected by the spin-density-wave (SDW) ordering wavevector on a Fermi surface generated by the 2D t−t{sup ′} Hubbard model at low hole doping. We compute the Callan–Symanzik RG equation up to two loops describing the flow of the single-particle Green’s function, the corresponding spectral function, the Fermi velocity, and some of the most important order-parameter susceptibilities in the model at lower energies. As a result, we establish that–in addition to clearly dominant SDW correlations–an approximate (pseudospin) symmetry relating a short-range incommensurated-wave charge order to the d-wave superconducting order indeed emerges at lower energy scales, which is in agreement with recent works available in the literature addressing the 2D spin-fermion model. We derive implications of this possible electronic phase in the ongoing attempt to describe the phenomenology of the pseudogap regime in underdoped cuprates.
Authors:
 [1] ;  [1] ;  [2]
  1. Instituto de Física, Universidade Federal de Goiás, 74.001-970, Goiânia-GO (Brazil)
  2. (United States)
Publication Date:
OSTI Identifier:
22403377
Resource Type:
Journal Article
Resource Relation:
Journal Name: Annals of Physics (New York); Journal Volume: 348; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CUPRATES; D WAVES; EQUATIONS; FERMI LEVEL; FERMIONS; FIELD THEORIES; GREEN FUNCTION; HOT SPOTS; HUBBARD MODEL; ORDER PARAMETERS; RENORMALIZATION; SPECTRAL FUNCTIONS; SYMMETRY; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS