Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons

Details Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons

2010-11-04

arxiv.org/abs/1011.1259v1

Phys. Rev. B 83, 045104 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 5 figures, submitted to PRB

Scientific paper

10.1103/PhysRevB.83.045104

We use both a perturbative Green's function analysis and standard perturbative quantum mechanics to calculate the decrease in energy and the effective mass for an electron interacting with acoustic phonons. The interaction is between the difference in lattice displacements for neighbouring ions, and the hopping amplitude for an electron between those two sites. The calculations are performed in one, two, and three dimensions, and comparisons are made with results from other electron-phonon models. We also compute the spectral function and quasiparticle residue, as a function of characteristic phonon frequency. There are strong indications that this model is always polaronic on one dimension, where an unusual relation between the effective mass and the quasiparticle residue is also found.

Affiliated with

Also associated with

No associations

Rating

Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons 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 Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perturbation theory of the mass enhancement for a polaron coupled to acoustic phonons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-452989