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

Abstract

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.

5 pages, 1 figure, revtex4; comments added and Eq.(11) corrected, published version

References in corpus (5)

• Bits and Pieces in Logarithmic Conformal Field Theory
• Scaling fields in the two-dimensional abelian sandpile model
• Modular transformation and boundary states in logarithmic conformal field theory
• Boundary States in c=-2 Logarithmic Conformal Field Theory
• Boundary states in boundary logarithmic CFT

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