Comparison of variational and CSE methods to polaron ground-state energy

Simple item page
dc.creatorChen, Qing
dc.creatorWang, Ke-Lin
dc.creatorWang, Yi
dc.date2004-12-19
dc.date.accessioned2026-07-07T03:02:47Z
dc.date.available2026-07-07T03:02:47Z
dc.descriptionTaking the same trial wave function, the ground-state energy of Fröhlich polaron is investigated by variational method and coherent-state expansion (CSE) one, respectively. Within the accuracy to $α^{2}$(the electron-phonon coupling constant), both methods can give the same analytic expressions of polaron ground-state energy as the function of electron-phonon coupling constant. We find that the CSE method can much simplify the calculation and shows more advantages in higher order approximations.
dc.description6 pages, no figure
dc.identifierhttps://arxiv.org/abs/cond-mat/0412515
dc.identifierhttp://arxiv.org/abs/cond-mat/0412515
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25523
dc.subjectOther Condensed Matter
dc.titleComparison of variational and CSE methods to polaron ground-state energy
dc.typetext

Files

Collections

arXiv