The decoupling of Ω¯ in string theory

Narain, K.S.; Zein Assi, Ahmad (2019). The decoupling of Ω¯ in string theory. Nuclear physics B, 938, pp. 762-774. Elsevier 10.1016/j.nuclphysb.2018.12.013

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In this note, we study the deformation of the topological string by Ω¯. Namely, adopting the perturbative string amplitudes approach, we identify the Ω¯-deformation in terms of a physical state in the sting spectrum. We calculate the topological amplitudes Fg in heterotic string theory in the presence of the latter. In partic-ular, we show that it is crucial to include quadratic terms in the effective action in order for Ω¯ to decouple. It turns out that this decoupling happens at the full string level, suggesting that this holds non-perturbatively.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Zein Assi, Ahmad

Subjects:

500 Science > 530 Physics

ISSN:

0550-3213

Publisher:

Elsevier

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

05 Nov 2019 09:24

Last Modified:

05 Nov 2019 09:24

Publisher DOI:

10.1016/j.nuclphysb.2018.12.013

ArXiv ID:

1807.11432

BORIS DOI:

10.7892/boris.134382

URI:

https://boris.unibe.ch/id/eprint/134382

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