The Dilaton and Modified Gravity

Abstract

We consider the dilaton in the strong string coupling limit and elaborate on the original idea of Damour and Polyakov whereby the dilaton coupling to matter has a minimum with a vanishing value at finite field-value. Combining this type of coupling with an exponential potential, the effective potential of the dilaton becomes matter density dependent. We study the background cosmology, showing that the dilaton can play the role of dark energy. We also analyse the constraints imposed by the absence of violation of the equivalence principle. Imposing these constraints and assuming that the dilaton plays the role of dark energy, we consider the consequences of the dilaton on large scale structures and in particular the behaviour of the slip functions and the growth index at low redshift.

14 pages, 4 figures

References in corpus (13)

• Dynamics of dark energy
• Cosmology and the Fate of Dilatation Symmetry
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Test of the Equivalence Principle Using a Rotating Torsion Balance
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• A discriminating probe of gravity at cosmological scales
• Constraining f(R) Gravity as a Scalar Tensor Theory
• Evading Equivalence Principle Violations, Cosmological and other Experimental Constraints in Scalar Field Theories with a Strong Coupling to Matter
• f(R) Gravity and Chameleon Theories
• Strongly Coupled Chameleon Fields: New Horizons in Scalar Field Theory
• Viability of f(R) Theories with Additional Powers of Curvature
• A bound on the effective gravitational coupling from semiclassical black holes
• Eotvos bounds on couplings of fundamental parameters to gravity

Cited by in corpus (173)

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• The Parameterized Post-Friedmann Framework for Theories of Modified Gravity: Concepts, Formalism and Examples
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• Modified Gravity Makes Galaxies Brighter
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• Disformal Theories of Gravity: From the Solar System to Cosmology
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