Exact Numerical Calculation of the Density of States of the Fluctuating Gap Model

Details Exact Numerical Calculation of the Density of States of the Fluctuating Gap Model Exact Numerical Calculation of the Density of States of the Fluctuating Gap Model

1999-08-04

arxiv.org/abs/cond-mat/9908065v1

Phys. Rev. B 60, 15488 (1999).

Physics

Condensed Matter

Strongly Correlated Electrons

4 revtex pages, 3 figures

Scientific paper

10.1103/PhysRevB.60.15488

We develop a powerful numerical algorithm for calculating the density of states rho(omega) of the fluctuating gap model, which describes the low-energy physics of disordered Peierls and spin-Peierls chains. We obtain rho(omega) with unprecedented accuracy from the solution of a simple initial value problem for a single Riccati equation. Generating Gaussian disorder with large correlation length xi by means of a simple Markov process, we present a quantitative study of the behavior of rho (omega) in the pseudogap regime. In particular, we show that in the commensurate case and in the absence of forward scattering the pseudogap is overshadowed by a Dyson singularity below a certain energy scale omega^{ast}, which we explicitly calculate as a function of xi.

Affiliated with

Also associated with

No associations

Rating

Exact Numerical Calculation of the Density of States of the Fluctuating Gap 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 Exact Numerical Calculation of the Density of States of the Fluctuating Gap Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exact Numerical Calculation of the Density of States of the Fluctuating Gap Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-373816