Exploring the spectrum of regularized bosonic string theory

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776115030024· OSTI ID:22472370

Ambjørn, J., E-mail: [e-mail]; Makeenko, Y., E-mail: [e-mail] ^[1]

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1. Copenhagen University, The Niels Bohr Institute (Denmark)

We implement a UV regularization of the bosonic string by truncating its mode expansion and keeping the regularized theory “as diffeomorphism invariant as possible.” We compute the regularized determinant of the 2d Laplacian for the closed string winding around a compact dimension, obtaining the effective action in this way. The minimization of the effective action reliably determines the energy of the string ground state for a long string and/or for a large number of space-time dimensions. We discuss the possibility of a scaling limit when the cutoff is taken to infinity.

• OSTI ID: 22472370
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 120, Issue 3; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTION INTEGRAL
COMPACTIFICATION
GROUND STATES
LAPLACIAN
MINIMIZATION
SPACE-TIME
STRING MODELS
STRING THEORY