TL;DR
This paper investigates FZZT-branes and open string amplitudes in (p,q) minimal string theory, revealing new relations among boundary states and simplifying the boundary ground ring's role in computations.
Contribution
It identifies the worldsheet counterparts of boundary changing operators and uncovers a novel linear relation among FZZT boundary states in minimal string theory.
Findings
Discovered a new linear relation among FZZT boundary states.
Showed the boundary ground ring acts simply on open string operators.
Connected two-matrix model operators with worldsheet theory counterparts.
Abstract
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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Taxonomy
TopicsBlack Holes and Theoretical Physics · Algebraic structures and combinatorial models · Nonlinear Waves and Solitons