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Inflation in a superstring model

K Maeda, M D Pollock and C E Vayonakis

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LETTER TO THE EDITOR

A new type of inflation is presented in the heterotic E8*E8 superstring model. The inflation is identified with the 'Polonyi' field tau , which is related to the radius of the internal space. Radiative corrections to the gluino condensation potential are supposed to give rise to a suitable potential which is adjusted to vanish at the minimum by addition of a constant Delta V, whose magnitude is fixed by the requirement that density perturbations are of the right order. Reheating is due to the decay of the 'Polonyi' field tau and/or to the production of light particles through its oscillations. The resultant constraints upon the parameters of the potential can be satisfied without excessive fine tuning.


PACS

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

04.50.-h Higher-dimensional gravity and other theories of gravity

11.25.-w Strings and branes

MSC

83E30 String and superstring theories (See also 81T30)

83F05 Cosmology

81T30 String and superstring theories; other extended objects (e.g., branes) (See also 83E30)

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 5 (September 1986)



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