Simulations of the F model on planar φ 4 Feynman diagrams

Wolfhard Janke, Martin Weigel

Research output: Contribution to conferencePaper

Abstract

The 6-vertex F model on the square lattice exhibits a critical line with central chargeC = 1, terminating in a critical point of the Kosterlitz-Thouless type. As such, its coupling to two-dimensional quantum gravity by placing it onto the dynamically triangulated random surfaces (DTRS) of the simplicial formulation yields an interesting realization of the limiting case C = 1 where the continuum description of quantum gravity plus matter fields in two dimensions breaks down. Technically, since the general 6- and 8-vertex models of statistical mechanics are defined with respect to four-valent lattices, the model has to be coupled to dynamical quadrangulations. Generalizing the well-known algorithmic tools for treating dynamical triangulations in a Monte Carlo simulation to the case of these random lattices made of squares, we present extensive numerical results for the critical-point properties of the coupled system, including the matter related as well as the graph related critical exponents of the model.
Original languageEnglish
Publication statusPublished - 2005
EventXXXLII International Symposium on Lattice Field Theory and Statistical Physics - Trinity College, Dublin, Ireland
Duration: 25 Jul 200530 Jul 2005

Conference

ConferenceXXXLII International Symposium on Lattice Field Theory and Statistical Physics
CountryIreland
CityDublin
Period25/07/0530/07/05

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Bibliographical note

The full text is available from: http://pos.sissa.it/archive/conferences/020/251/LAT2005_251.pdf

Cite this

Janke, W., & Weigel, M. (2005). Simulations of the F model on planar φ 4 Feynman diagrams. Paper presented at XXXLII International Symposium on Lattice Field Theory and Statistical Physics, Dublin, Ireland.