%0 Journal Article %1 san05 %A Sangiovanni, G. %A Capone, M. %A Castellani, C. %A Grilli, M. %D 2005 %I APS %J Phys. Rev. Lett. %K high-tc, theory %N 2 %P 026401 %R 10.1103/PhysRevLett.94.026401 %T Electron-Phonon Interaction Close to a Mott Transition %U http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000094000002026401000001&idtype=cvips&gifs=yes %V 94 %X The effect of Holstein electron-phonon interaction on a Hubbard model close to a Mott-Hubbard transition at half filling is investigated by means of dynamical mean-field theory. We observe a reduction of the effective mass that we interpret in terms of a reduced effective repulsion. When the repulsion is rescaled to take into account this effect, the quasiparticle low-energy features are unaffected by the electron-phonon interaction. Phonon features are only observed within the high-energy Hubbard bands. The lack of electron-phonon fingerprints in the quasiparticle physics can be explained interpreting the quasiparticle motion in terms of rare fast processes.

@article{san05, abstract = {The effect of Holstein electron-phonon interaction on a Hubbard model close to a Mott-Hubbard transition at half filling is investigated by means of dynamical mean-field theory. We observe a reduction of the effective mass that we interpret in terms of a reduced effective repulsion. When the repulsion is rescaled to take into account this effect, the quasiparticle low-energy features are unaffected by the electron-phonon interaction. Phonon features are only observed within the high-energy Hubbard bands. The lack of electron-phonon fingerprints in the quasiparticle physics can be explained interpreting the quasiparticle motion in terms of rare fast processes.}, added-at = {2008-06-25T19:30:29.000+0200}, author = {Sangiovanni, G. and Capone, M. and Castellani, C. and Grilli, M.}, biburl = {https://www.bibsonomy.org/bibtex/2523f0cb6d06ba1cd1f9c4af439b4ecc3/jgl}, citeulike-article-id = {2501247}, doi = {10.1103/PhysRevLett.94.026401}, interhash = {8284c74289aecf681e18540a8bc0914c}, intrahash = {523f0cb6d06ba1cd1f9c4af439b4ecc3}, journal = {Phys. Rev. Lett.}, keywords = {high-tc, theory}, number = 2, pages = 026401, posted-at = {2008-04-22 12:08:32}, priority = {2}, publisher = {APS}, timestamp = {2008-06-25T19:31:19.000+0200}, title = {Electron-Phonon Interaction Close to a Mott Transition}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000094000002026401000001\&idtype=cvips\&gifs=yes}, volume = 94, year = 2005 }