Quantum Monte Carlo Simulation on Hubbard Model for High Temperature Superconductivity.

Takahiro Misawa, Masatoshi Imada

Jicheol Kim, DH Kim

A. Muramatsu, G. Dopf, J. Wagner +2 more

Richard T. Scalettar, Douglas J. Scalapino, Robert L. Sugar +1 more

The nature of the pairing mechanism responsible for high-temperature superconductivity remains a central theoretical puzzle in condensed matter physics. In this paper the authors discuss the properties of the two-dimensional CuO{sub 2} layers common to these materials in terms of a three-bank Hubbard model. The authors describe how recently developed quantum Monte Carlo simulation techniques allow one to calculate the physical properties of strongly interacting many-electron systems and discuss the resources required for such simulations. Then the authors review what we have learned from these simulations about the antiferromagnetic, charge-transfer, and superconducting correlations in the three-band Hubbard model. The authors conclude with a discussion of future goals.

D.R. Djuraev, Z.M. Kenjaev

Richard T. Scalettar, Douglas J. Scalapino, Robert L. Sugar +1 more

The nature of the pairing mechanism responsible for high-temperature superconductivity remains a central theoretical puzzle in condensed matter physics. Here we discuss the properties of the two-dimensional CuO 2 layers common to these materials in terms of a three- band Hubbard model. We describe how recently devel oped quantum Monte Carlo simulation techniques al low one to calculate the physical properties of strongly interacting many-electron systems and discuss the re sources required for such simulations. Then we review what we have learned from these simulations about the antiferromagnetic, charge-transfer, and supercon ducting correlations in the three-band Hubbard model. We conclude with a discussion of future goals.