Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-10-11
Phys.Lett. B607 (2005) 188-196
Physics
Condensed Matter
Statistical Mechanics
7 pages, 2 figures
Scientific paper
10.1016/j.physletb.2004.12.045
We report on the exact computation of the scaling form of the 1-point function, on the upper-half plane, of the height 2 variable in the two-dimensional Abelian sandpile model. By comparing the open versus the closed boundary condition, we find that the scaling field associated to the height 2 is a logarithmic scalar field of scaling dimension 2, belonging to a c=-2 logarithmic conformal field theory. This identification is confirmed by numerical simulations and extended to the height 3 and 4 variables, which exhibit the same scaling form. Using the conformal setting, we make precise proposals for the bulk 2-point functions of all height variables.
Piroux Geoffroy
Ruelle Philippe
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