Off-shell amplitudes in two-dimensional open string field theory

Journal Article · Thu Sep 15 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.4075· OSTI ID:7158014

Urosevic, B ^[1]

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1. Physics Department, Brown University, Providence, Rhode Island 02912 (United States)

In this article we present an explicit procedure for the regularization of tree level amplitudes involving discrete states, using open string field theory. We show that there is a natural correspondence between the discrete states and off-shell states, later acting as a regularized version of the former. A general off-shell state corresponds to several physical states. In order to obtain the well-defined [ital S] matrix elements one has to choose representatives close but not equal to the desired values of external momenta. The procedure renders finite all four-point amplitudes with an even number of (naively) divergent channels even after the regularization is removed. The rest of the amplitudes can be defined by means of such regularization.

• DOE Contract Number: FG02-91ER40688
• OSTI ID: 7158014
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:6; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COMPOSITE MODELS
EXTENDED PARTICLE MODEL
FIELD THEORIES
MATHEMATICAL MODELS
MATRICES
PARTICLE MODELS
QUARK MODEL
S MATRIX
STRING MODELS
TWO-DIMENSIONAL CALCULATIONS