Using off-diagonal confinement as a cooling method

ORAL

Abstract

We show that the recently proposed ``off-diagonal confining" (ODC) method (Phys. Rev. Lett. 104, 167201 (2010)) can lead to temperatures that are smaller than with the conventional ``diagonal confining" (DC) method, depending on the control parameters of the system. We determine these parameters using exact diagonalizations for the hard-core case, then we extend our results to the soft-core case by performing quantum Monte Carlo simulations for both DC and ODC systems at fixed temperatures, and analysing the corresponding entropies.

*This work was supported by NSF OISE-0952300.

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Authors

  • Valy Rousseau

    • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
    • Louisiana State University

  • Kalani Hettiarachchilage

  • Juana Moreno

  • Mark Jarrell

  • Dan Sheehy