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Closed string deformations in open string field theory. Part II. Superstring

Articolo
Data di Pubblicazione:
2021
Abstract:
This is the second paper of a series of three. We construct effective open-closed superstring couplings by classically integrating out massive fields from open superstring field theories coupled to an elementary gauge invariant tadpole proportional to an on-shell closed string state in both large and small Hilbert spaces, in the NS sector. This source term is well known in the WZW formulation and by explicitly performing a novel large Hilbert space perturbation theory we are able to characterize the first orders of the vacuum shift solution, its obstructions and the non-trivial open-closed effective couplings in closed form. With the aim of getting all order results, we also construct a new observable in the A∞ theory in the small Hilbert space which correctly provides a gauge invariant coupling to physical closed strings and which descends from the WZW open-closed coupling upon partial gauge fixing and field redefinition. Armed with this new A∞ observable we use tensor co-algebra techniques to efficiently package the whole perturbation theory necessary for computing the effective action and we give all order results for the open-closed effective couplings in the small Hilbert space.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
D-branes; String Field Theory; Superstring Vacua
Elenco autori:
Maccaferri C.; Vosmera J.
Autori di Ateneo:
MACCAFERRI Carlo Giovanni
Link alla scheda completa:
https://iris.unito.it/handle/2318/1805361
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1805361/813814/Maccaferri-Vo%C5%A1mera2021_Article_ClosedStringDeformationsInOpen.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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