Phenomenological and cosmological consequences of gauge singlets in superstring theories

Sunil Kalara; Keith A. Olive

doi:10.1016/0550-3213(90)90022-6

Phenomenological and cosmological consequences of gauge singlets in superstring theories

Sunil Kalara, Keith A. Olive

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Superstring theories contain a large number of massless singlet fields. In this paper we examine their phenomenological and cosmological implications. In particular from the general constraints on their couplings we argue that many of them couple very weakly to matter fields. We further examine their impact on the big bang nucleosynthesis and derive a constraint on the number of gauge singlet fields that can be tolerated. We also consider the effects of decaying singlets on the overall mass density of the universe, entropy production and light element abundances.

Original language	English (US)
Pages (from-to)	181-193
Number of pages	13
Journal	Nuclear Physics, Section B
Volume	331
Issue number	1
DOIs	https://doi.org/10.1016/0550-3213(90)90022-6
State	Published - Feb 5 1990

Bibliographical note

Funding Information:
Sunil Kalara would like to thank N. Seiberg for useful discussions. The work of Keith A. Olive was supported in part by DOE grant DE-AC02-83ER-40105 and by a Presidential Young Investigator Award.

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abstract = "Superstring theories contain a large number of massless singlet fields. In this paper we examine their phenomenological and cosmological implications. In particular from the general constraints on their couplings we argue that many of them couple very weakly to matter fields. We further examine their impact on the big bang nucleosynthesis and derive a constraint on the number of gauge singlet fields that can be tolerated. We also consider the effects of decaying singlets on the overall mass density of the universe, entropy production and light element abundances.",

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N2 - Superstring theories contain a large number of massless singlet fields. In this paper we examine their phenomenological and cosmological implications. In particular from the general constraints on their couplings we argue that many of them couple very weakly to matter fields. We further examine their impact on the big bang nucleosynthesis and derive a constraint on the number of gauge singlet fields that can be tolerated. We also consider the effects of decaying singlets on the overall mass density of the universe, entropy production and light element abundances.

AB - Superstring theories contain a large number of massless singlet fields. In this paper we examine their phenomenological and cosmological implications. In particular from the general constraints on their couplings we argue that many of them couple very weakly to matter fields. We further examine their impact on the big bang nucleosynthesis and derive a constraint on the number of gauge singlet fields that can be tolerated. We also consider the effects of decaying singlets on the overall mass density of the universe, entropy production and light element abundances.

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Phenomenological and cosmological consequences of gauge singlets in superstring theories

Abstract

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