Normalization of D-instanton amplitudes

Abstract D-instanton amplitudes suffer from various infrared divergences associated with tachyonic or massless open string modes, leading to ambiguous contribution to string amplitudes. It has been shown previously that string field theory can resolve these ambiguities and lead to unambiguous expres...

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Autor principal:	Ashoke Sen
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	D-branes String Field Theory Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/6d82107d1f2848aaa5af2b56a3aa9c1b
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spelling	oai:doaj.org-article:6d82107d1f2848aaa5af2b56a3aa9c1b2021-11-14T12:42:09ZNormalization of D-instanton amplitudes10.1007/JHEP11(2021)0771029-8479https://doaj.org/article/6d82107d1f2848aaa5af2b56a3aa9c1b2021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)077https://doaj.org/toc/1029-8479Abstract D-instanton amplitudes suffer from various infrared divergences associated with tachyonic or massless open string modes, leading to ambiguous contribution to string amplitudes. It has been shown previously that string field theory can resolve these ambiguities and lead to unambiguous expressions for D-instanton contributions to string amplitudes, except for an overall normalization constant that remains undetermined. In this paper we show that string field theory, together with the world-sheet description of the amplitudes, can also fix this normalization constant. We apply our analysis to the special case of two dimensional string theory, obtaining results in agreement with the matrix model results obtained by Balthazar, Rodriguez and Yin.Ashoke SenSpringerOpenarticleD-branesString Field TheoryNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	D-branes String Field Theory Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	D-branes String Field Theory Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Ashoke Sen Normalization of D-instanton amplitudes
description	Abstract D-instanton amplitudes suffer from various infrared divergences associated with tachyonic or massless open string modes, leading to ambiguous contribution to string amplitudes. It has been shown previously that string field theory can resolve these ambiguities and lead to unambiguous expressions for D-instanton contributions to string amplitudes, except for an overall normalization constant that remains undetermined. In this paper we show that string field theory, together with the world-sheet description of the amplitudes, can also fix this normalization constant. We apply our analysis to the special case of two dimensional string theory, obtaining results in agreement with the matrix model results obtained by Balthazar, Rodriguez and Yin.
format	article
author	Ashoke Sen
author_facet	Ashoke Sen
author_sort	Ashoke Sen
title	Normalization of D-instanton amplitudes
title_short	Normalization of D-instanton amplitudes
title_full	Normalization of D-instanton amplitudes
title_fullStr	Normalization of D-instanton amplitudes
title_full_unstemmed	Normalization of D-instanton amplitudes
title_sort	normalization of d-instanton amplitudes
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/6d82107d1f2848aaa5af2b56a3aa9c1b
work_keys_str_mv	AT ashokesen normalizationofdinstantonamplitudes
_version_	1718429054497980416

Normalization of D-instanton amplitudes

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