On the tachyonic terms in the string effective action

Tseytlin, Arkady A.

doi:10.1016/0370-2693(91)90355-T

On the tachyonic terms in the string effective action

Arkady A. Tseytlin
(
- Johns Hopkins U.
)

Mar, 1991

8 pages

Published in:

Phys.Lett.B 264 (1991) 311-318

Published: 1991

DOI:

10.1016/0370-2693(91)90355-T

Report number:

JHU-TIPAC-91004

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Abstract: (Elsevier)

We discuss the structure of the effective action and the corresponding σ-model ß-functions for the massless and the tachyonic modes of the closed Bose string theory with an emphasis on the issues of covariance and field redefinition ambiguity. It is shown that the leading terms in the effective action which are linear in the tachyonic field can be represented in a local covariant form. We consider the D = 2 critical Bose string theory as a special case.

string model
effective action
sigma model: nonlinear
field theory: tensor
renormalization group: beta function
field theory: tachyon
perturbation theory: higher-order

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