Abstract
The detailed correspondence between the Emin-Holstein scaling theory and Feynman path-integral method for small-polaron formation is presented. In particular it is shown that the first-cumulant approximation to the path integral using a harmonic trial action in the adiabatic limit is identical to the use of a Gaussian trial wave function in the Emin-Holstein one-parameter scaling theory for the ground-state energy with polaron radius. This is then generalized to a simple two-parameter scaling theory involving both the polaron radius as well as nonadiabaticity of the electron-phonon interaction.
Original language | English (US) |
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Pages (from-to) | 2428-2433 |
Number of pages | 6 |
Journal | Physical Review B |
Volume | 34 |
Issue number | 4 |
DOIs | |
State | Published - 1986 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics