Cosmological solutions in D = 6, N = 2 Kaluza-Klein supergravity - The Friedmann universe without fine-tuning

Keiichi Maeda, H. Nishino

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Two families of cosmological solutions are presented in D = 6, N = 2 Kaluza-Klein supergravity theories. One family, which applies to the case that the universe is in a vacuum state, includes the (Minkowski space-time)×(constant sphere S2) solution. The case with four-dimensional radiation comprises the other family, which contains the (Friedmann universe)× (constant sphere S2) solution. All solutions in the latter family approach the Friedmann universe asymptotically. The four-dimensional cosmological constant vanishes automatically without fine-tuning in both families of solutions.

Original languageEnglish
Pages (from-to)358-362
Number of pages5
JournalPhysics Letters B
Volume154
Issue number5-6
DOIs
Publication statusPublished - 1985 May 9
Externally publishedYes

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supergravity
universe
tuning
Minkowski space
time constant
vacuum
radiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Cosmological solutions in D = 6, N = 2 Kaluza-Klein supergravity - The Friedmann universe without fine-tuning. / Maeda, Keiichi; Nishino, H.

In: Physics Letters B, Vol. 154, No. 5-6, 09.05.1985, p. 358-362.

Research output: Contribution to journalArticle

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