Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-04-30
JHEP 0806:029,2008
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, 1 figure, 1 reference added
Scientific paper
10.1088/1126-6708/2008/06/029
We study FZZT-branes and open string amplitudes in (p,q) minimal string theory. We focus on the simplest boundary changing operators in two-matrix models, and identify the corresponding operators in worldsheet theory through the comparison of amplitudes. Along the way, we find a novel linear relation among FZZT boundary states in minimal string theory. We also show that the boundary ground ring is realized on physical open string operators in a very simple manner, and discuss its use for perturbative computation of higher open string amplitudes.
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