Type II RR string fields and exotic diffeomorphisms

Fuente: arXiv
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Main Authors: Mamade, Raji Ashenafi, Zwiebach, Barton
Format: Preprint
Published: 2025
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author Mamade, Raji Ashenafi
Zwiebach, Barton
author_facet Mamade, Raji Ashenafi
Zwiebach, Barton
contents We study the theory of massless fields of type II strings arising from the string field theory that uses two string fields, a physical one and an extra one that allows the writing of an action, but whose degrees of freedom ultimately decouple. The mechanism allowing the description of the self-dual five-form of type IIB, anticipated by Sen, is used by the SFT to describe all Ramond-Ramond forms in type IIB and IIA in a manifestly duality-invariant way. We find explicit expressions for the leading terms in the gauge transformation of the RR fields and focus on diffeomorphisms, which are exotic for both the physical and the extra fields, perhaps as needed to describe propagating degrees of freedom that do not gravitate. The algebra of diffeomorphisms includes field-dependent structure constants and only closes on-shell, as predicted by the type II SFT gauge algebra.
format Preprint
id arxiv_https___arxiv_org_abs_2506_00120
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Type II RR string fields and exotic diffeomorphisms
Mamade, Raji Ashenafi
Zwiebach, Barton
High Energy Physics - Theory
We study the theory of massless fields of type II strings arising from the string field theory that uses two string fields, a physical one and an extra one that allows the writing of an action, but whose degrees of freedom ultimately decouple. The mechanism allowing the description of the self-dual five-form of type IIB, anticipated by Sen, is used by the SFT to describe all Ramond-Ramond forms in type IIB and IIA in a manifestly duality-invariant way. We find explicit expressions for the leading terms in the gauge transformation of the RR fields and focus on diffeomorphisms, which are exotic for both the physical and the extra fields, perhaps as needed to describe propagating degrees of freedom that do not gravitate. The algebra of diffeomorphisms includes field-dependent structure constants and only closes on-shell, as predicted by the type II SFT gauge algebra.
title Type II RR string fields and exotic diffeomorphisms
topic High Energy Physics - Theory
url https://arxiv.org/abs/2506.00120