Dear Elena and Nils,
I am sending attached two plots that show the dtau dependence of the
double occupation for cubic lattices with 6x6x6 size and U=6 at
half-filling.
I don´t have the same temperature grid for all dtau values, but there are
some Ts for which I gathered 5 dtau values. Graph2 shows the dtau behavior
of the double occupation for these Ts. The points are the QMC data and
the lines are parabolic fittings. The fittings are really good!
Let me know if you need more dtau values and/or more temperature values.
I´ll send nearest-neighbor spin-spin correlations in a moment.
best,
Thereza
On Thu, 30 Sep 2010, Nils Bluemer wrote:
Dear Thereza and Richard,
Elena has gone through all files (Origin and plain text) again and has collected the QMC data that we have, with a linked summary page: http://komet337.physik.uni-mainz.de/Gorelik/qmc_summary.html . Unfortunately, we still have no idea about the discretization dependence of the spin-spin correlation data and only a rough idea in the case of the double occupations. So will you send us additional data in the near future? Or shall we sort everything out during my stay in Davis?
You have probably seen the preprints on the thermodynamics of the Hubbard model near the Neel temperature recently put online by the Troyer and the Georges groups:
http://arxiv.org/abs/1009.2759
Thermodynamics of the 3D Hubbard model on approach to the Neel transition
Authors: S. Fuchs, E. Gull, L. Pollet, E. Burovski, E. Kozik, T.
Pruschke, M. Troyer
Comments: 4 pages, 6 figures
Subjects: Quantum Gases (cond-mat.quant-gas); Strongly Correlated
Electrons (cond-mat.str-el)
http://arxiv.org/abs/1009.2761
Thermodynamics of the three-dimensional Hubbard model: Implications for
cooling cold atomic gases in optical lattices
Authors: Lorenzo De Leo, Jean-Sebastien Bernier, Corinna Kollath,
Antoine Georges, Vito W. Scarola
Comments: 17 pages, 27 figures
Subjects: Quantum Gases (cond-mat.quant-gas); Strongly Correlated
Electrons (cond-mat.str-el)
Attached is an extension of our DMFT-QMC comparison for the cubic lattice to the DCA and DMFT data shown in the former paper. I am pretty satisfied with it as the DCA data is roughly where an extrapolation of the QMC data might end up. Fortunately for us, they did not reach low enough temperatures to see the interesting signatures (except for U/t=8 where it is a bit subtle).
Best regards
Nils
Nils Blümer
Institut für Physik, KOMET 337 Room: 03 134, Staudingerweg 7
Johannes Gutenberg-Universität Phone: (+49) 6131 / 392 22 77
55099 Mainz, Germany FAX: (+49) 6131 / 392 09 54
http://komet337.physik.uni-mainz.de/Bluemer/
---------------------------------------------
Thereza Cristina de Lacerda Paiva
Departamento de Fisica dos Solidos
Instituto de Fisica
Universidade Federal do Rio de Janeiro
tclp@if.ufrj.br
www.if.ufrj.br/~tclp/tclp.html
tel: 55 21 2562-7316
fax: 55 21 2562-7368
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