Publication

Dynamical inflation and unification scale on quantum moduli spaces

Riccardo Rattazzi
1997
Journal paper

Abstract

We show that simple strongly coupled supersymmetric gauge theories with quantum moduli spaces can naturally lead to hybrid inflation. These theories contain no input dimensionful or small parameters. The effective superpotential is Linear in the inflaton field; this ensures that supergravity corrections do not spoil the slow roll conditions for inflation. We construct a simple theory in which the classical moduli space exhibits neither GUT-symmetry-breaking nor inflation whereas its quantum modification exhibits both. As a result, the dynamical origin and scales of inflation and grand unification coincide. (C) 1997 Elsevier Science B.V.

Official source

https://infoscience.epfl.ch/record/152081?ln=en

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Ontological neighbourhood

Astronomy

Astrophysics: Physical cosmology

Related concepts (32)

Inflation (cosmology)

In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch is believed to have lasted from seconds to between and seconds after the Big Bang. Following the inflationary period, the universe continued to expand, but at a slower rate. The acceleration of this expansion due to dark energy began after the universe was already over 7.7 billion years old (5.4 billion years ago).

Inflaton

The inflaton field is a hypothetical scalar field which is conjectured to have driven cosmic inflation in the very early universe. The field, originally postulated by Alan Guth, provides a mechanism by which a period of rapid expansion from 10−35 to 10−34 seconds after the initial expansion can be generated, forming a universe consistent with observed spatial isotropy and homogeneity.

Inflationary epoch

NOTOC In physical cosmology, the inflationary epoch was the period in the evolution of the early universe when, according to inflation theory, the universe underwent an extremely rapid exponential expansion. This rapid expansion increased the linear dimensions of the early universe by a factor of at least 1026 (and possibly a much larger factor), and so increased its volume by a factor of at least 1078. Expansion by a factor of 1026 is equivalent to expanding an object 1 nanometer (10−9 m, about half the width of a molecule of DNA) in length to one approximately 10.

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