Semi-free field representation and string field theory in 2D gravity

Journal Article · Sat Mar 14 00:00:00 EST 1992 · Modern Physics Letters A; (United States)

DOI:https://doi.org/10.1142/S0217732392000653· OSTI ID:5262155

Aref'eva, I Y; Zubarev, A P ^[1]

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1. Stekiov Mathematical Inst., Vavilov 42, GSP-1, 117966 Moscow (SU)

In this paper string field theory for 2D gravity coupled to a c = 1 matter field is described. The authors use the free field representation and take into account the semi-bounded of the Liouville mode in the last step of calculations. The authors call such representation semi-free field representations. It is shown that the Witten string field theory gives a tachyon action which up to some, factor in the interaction term coincides with the Das-Jevicki-Polchinski action. Starting from string field theory with semi-free field representation we calculate string amplitudes. These amplitudes instead of energy conservation {delta}-functions contain energy denominators which residues coincide with the Veneziano (Shapiro-Virasoro) amplitudes for open (closed) string and exhibit very interesting property: the s, t and u poles become the poles in respect to individual external momentum. These poles are related with higher levels excitations living only with fixed momentum.

• OSTI ID: 5262155
• Journal Information: Modern Physics Letters A; (United States), Vol. 7:8; ISSN 0217-7323
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
STRING MODELS
GRAVITATION
AMPLITUDES
COUPLING
DELTA FUNCTION
ENERGY CONSERVATION
FIELD THEORIES
INTERACTIONS
TACHYONS
TWO-DIMENSIONAL CALCULATIONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FUNCTIONS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
662210 - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)