No-scale supergravity inflation: A bridge between string theory and particle physics?

John Ellis*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

2 Citations (Scopus)

Abstract

The plethora of recent and forthcoming data on the cosmic microwave background (CMB) data are stimulating a new wave of inflationary model-building. Naturalness suggests that the appropriate framework for models of inflation is supersymmetry. This should be combined with gravity in a supergravity theory, whose specific no-scale version has much to commend it, e.g. its derivation from string theory and the flat directions in its effective potential. Simple no-scale supergravity models yield predictions similar to those of the Starobinsky R + R2 model, though some string-motivated versions make alternative predictions. Data are beginning to provide interesting constraints on the rate of inflaton decay into Standard Model particles. In parallel, LHC and other data provide significant constraints on no-scale supergravity models, which suggest that some sparticles might have masses close to present experimental limits.

Original languageEnglish
Article number1630027
JournalINTERNATIONAL JOURNAL OF MODERN PHYSICS D
Volume25
Issue number14
DOIs
Publication statusPublished - 13 Jul 2016

Keywords

  • CMB
  • Inflation
  • LHC
  • supergravity
  • supersymmetry

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