Ward identity and optical-conductivity sum rule in the d-density wave state

Details Ward identity and optical-conductivity sum rule in the d-density wave state Ward identity and optical-conductivity sum rule in the d-density wave state

2004-07-16

arxiv.org/abs/cond-mat/0407443v2

Phys. Rev. B 71, 104511 (2005)

Physics

Condensed Matter

Superconductivity

Revised version, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.71.104511

We consider the role of the Ward identity in dealing with the transport properties of an interacting system forming a d-wave modulated charge-density wave or staggered flux phase. In particular, we address this issue from the point of view of the restricted optical-conductivity sum rule. Our aim is to provide a controlled approximation for the current-current correlation function which allows us also to determine analytically the corresponding sum rule. By analyzing the role of the vertex functions in both the microscopic interacting model and in the effective mean-field Hamiltonian, we propose a non-standard low-energy sum-rule for this system. We also discuss the possible applicability of these results for the description of cuprate superconductors in the pseudogap regime.

Affiliated with

Also associated with

No associations

Rating

Ward identity and optical-conductivity sum rule in the d-density wave state 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 Ward identity and optical-conductivity sum rule in the d-density wave state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ward identity and optical-conductivity sum rule in the d-density wave state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-636257