Boundary operators in 2D gravity
1991; Elsevier BV; Volume: 263; Issue: 2 Linguagem: Inglês
10.1016/0370-2693(91)90584-d
ISSN1873-2445
AutoresEmil J. Martinec, Gregory Moore, Nathan Seiberg,
Tópico(s)Algebraic structures and combinatorial models
ResumoWe study boundary operators (open string vertices) in two-dimensional gravity and identify them as redundant operators in the matrix model. In the (p, q) minimal model coupled to 2D gravity there is always one relevant boundary operator, which measures the Z2-odd or Z2-even boundary length depending on whether q is odd or even. Our analysis also leads to new operators which exist in Liouville theory and in the matrix model but are not obvious in the KP description nor in the topological interpretation of these theories.
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