Comment on ``Electron-phonon Vertex in the Two-dimensional One-band Hubbard Model''
| dc.creator | Cerruti, B. | |
| dc.creator | Cappelluti, E. | |
| dc.creator | Pietronero, L. | |
| dc.date | 2003-07-09 | |
| dc.date.accessioned | 2026-07-07T02:52:14Z | |
| dc.date.available | 2026-07-07T02:52:14Z | |
| dc.description | In cond-mat/0306131 Huang {\em et al.} reported for the first time a numerical evidence for the predominance of small phonon momenta in the electron-phonon coupling induced by electronic correlation. They report also an upturn of the electron-phonon vertex function for small momenta as function of the Hubbard repulsion $U$ for sufficient large $U$. In this comment we compare their Quantum Monte Carlo data with analytical results based on slave-boson techniques for generic $U$. We associate the upturn of the electron-phonon vertex function with the tendency towards a phase separation instability at large temperatures. | |
| dc.description | 3 pages, comment on cond-mat/0306131 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0307190 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0307190 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/21769 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Comment on ``Electron-phonon Vertex in the Two-dimensional One-band Hubbard Model'' | |
| dc.type | text |