Quantum Monte Carlo results for the specific heat c of the two dimensional Hubbard model are presented. At half-filling it was observed that c∼T2 at very low temperatures. Two distinct features were also identified: a low temperature peak related to the spin degrees of freedom and a higher temperature broad peak related to the charge degrees of freedom. Away from half-filling the spin induced feature slowly disappears as a function of hole doping while the charge feature moves to lower temperature. A comparison with experimental results for the high temperature cuprates is discussed.
@article{arxiv.cond-mat/9612132,
title = {Specific Heat of the 2D Hubbard Model},
author = {Daniel Duffy and Adriana Moreo},
journal= {arXiv preprint arXiv:cond-mat/9612132},
year = {2009}
}
Comments
6 pages, RevTex, 11 figures embedded in the text, Submitted to Phys. Rev. B