Flow to strong coupling in the two-dimensional Hubbard model

Details Flow to strong coupling in the two-dimensional Hubbard model Flow to strong coupling in the two-dimensional Hubbard model

2002-04-02

arxiv.org/abs/cond-mat/0204063v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, to appear in European Physical Journal B

Scientific paper

10.1140/epjb/e20020137

We extend the analysis of the renormalization group flow in the two-dimensional Hubbard model close to half-filling using the recently developed temperature flow formalism. We investigate the interplay of d-density wave and Fermi surface deformation tendencies with those towards d-wave pairing and antiferromagnetism. For a ratio of next nearest to nearest neighbor hoppings, t'/t=-0.25, and band fillings where the Fermi surface is inside the Umklapp surface, only the d-pairing susceptibility diverges at low temperatures. When the Fermi surface intersects the Umklapp surface close to the saddle points, d-wave pairing, d-density wave, antiferromagnetic and, to a weaker extent, d-wave Fermi surface deformation susceptibilities grow together when the interactions flow to strong coupling. We interpret these findings as indications for a non-trivial strongly coupled phase with short-ranged superconducting and antiferromagnetic correlations, in close analogy with the spin liquid ground state in the well-understood two-leg Hubbard ladder.

Affiliated with

Also associated with

No associations

Rating

Flow to strong coupling in the two-dimensional Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Flow to strong coupling in the two-dimensional Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flow to strong coupling in the two-dimensional Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-316466