@article{oai:niigata-u.repo.nii.ac.jp:00002119,
 author = {Fuse, Takahiro and Ono, Yoshiaki},
 issue = {Supplement A},
 journal = {Journal of the Physical Society of Japan, Journal of the Physical Society of Japan},
 month = {Jul},
 note = {We investigate the heavy fermion states in the half-filled anharmonic Holstein model by using the dynamical mean-field theory combined with the exact diagonalization method at low temperatures down to 1/10^4 of the conduction bandwidth. For the weak anharmonic cases with single-well or shallow double-well potentials, the bipolaronic first order phase transition takes place at a critical value of the electron-phonon coupling below a critical temperature as recently observed in the harmonic Holstein model. On the other hand, for the strong anharmonic case with deep double-well potential, the bipolaronic transition is suppressed and changes to a crossover where the heavy fermion state with a large effective mass is realized due to the effect of largely anharmonic local oscillations called rattling., Proceedings of the International Conference on Heavy Electrons 2010 (ICHE2010)},
 pages = {SA136-1--SA136-3},
 title = {Rattling-Induced Heavy Fermion State in the Anharmonic Holstein Model},
 volume = {80},
 year = {2011}
}