Study of polaron properties using the momentum average approximation
In this work we present a highly efficient and accurate analytical approximation for the Green's function of a polaron: the momentum average (MA) approximation. It is obtained by summing all of the self-energy diagrams, but with each diagram averaged over the momenta of its free propagators. Th...
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
University of British Columbia
2009
|
| Online Access: | http://hdl.handle.net/2429/12701 |