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Specific Heat of the 2D Hubbard Model

Daniel Duffy·Adriana Moreo
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Abstract

Quantum Monte Carlo results for the specific heat c of the two dimensional Hubbard model are presented. At half-filling it was observed that $c \sim T^2$ 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.

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Daniel Duffy, Adriana Moreo. 1996-12-16. Specific Heat of the 2D Hubbard Model. https://doi.org/10.1103/physrevb.55.12918

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