A c=-2 boundary changing operator for the Abelian sandpile model

Ruelle, Philippe
(2002) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B539, p. 172-177 (2002)

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(en) We consider the unoriented two-dimensional Abelian sandpile model on the half-plane with open and closed boundary conditions. We show that the operator effecting the change from closed to open, or from open to closed, is a boundary primary field of weight -1/8, belonging to a c=-2 logarithmic conformal field theory. Comment: 5 pages, 1 figure, revtex4; comments added and Eq.(11) corrected, published version
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Ruelle, P. (2002). A c=-2 boundary changing operator for the Abelian sandpile model. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B539, 172-177. https://doi.org/10.1016/S0370-2693(02)02069-5 (Original work published 2002)