Strings in Background Fields

By Harun Omer. 2016

207 citations recorded by the source corpus.

In this paper free quantum theories are derived solely from their underlying symmetry group without reference to a Lagrangean or classical physics and then interactions are introduced by making use of automorphism of the symmetry algebra. It is shown how the solution of a theory interacting with background fields is obtained exactly and purely algebraically from the free theory by the action of a linear operator. The method is first applied to the harmonic oscillator interacting with a conserved current and in a second example to string theory in the presence of constant dilaton, Kalb-Ramond or gravitational fields. The derived interaction for the Kalb-Ramond background is periodic and the interactions with a dilaton respectively a gravitational field exhibit a strong-weak-coupling duality. Furthermore, it is proposed in this paper to interpret T-duality as a position-momentum duality on compact space.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/fa89a35af8814d75d09ed7c9e9cd43a15e26ce1d

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

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Citations in the corpus

Scale invariance of the η-deformed AdS5 × S5 superstring, T-duality and modified type II equations (2015, methodology): “As for the bosonic string [9], to cancel the 2d stress tensor trace anomaly requires adding the familiar 1-loop dilaton counterterm ∼ d 2 z √ hR (2) Φ( Z ) (see [10, 11] and references therein).”