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Title: Constraining f(R) gravity as a scalar-tensor theory

Abstract

We search for viable f(R) theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar system constraints either by giving the scalar a high mass or by exploiting the so-called chameleon effect. However, in both cases, it appears likely that any late-time cosmic acceleration will be observationally indistinguishable from acceleration caused by a cosmological constant. We also explore further observational constraints from, e.g., big bang nucleosynthesis and inflation.

Authors:
;  [1];  [1];  [2]
  1. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  2. Physics Department, University of Richmond, Richmond, Virginia 23173 (United States)
Publication Date:
OSTI Identifier:
21027755
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.76.063505; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCELERATION; COSMOLOGICAL CONSTANT; GRAVITATION; INFLATIONARY UNIVERSE; MASS; NUCLEOSYNTHESIS; SCALARS; SOLAR SYSTEM; TENSORS

Citation Formats

Faulkner, Thomas, Yi, Mao, Tegmark, Max, MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139, Bunn, Emory F, and MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139. Constraining f(R) gravity as a scalar-tensor theory. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.76.063505.
Faulkner, Thomas, Yi, Mao, Tegmark, Max, MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139, Bunn, Emory F, & MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139. Constraining f(R) gravity as a scalar-tensor theory. United States. https://doi.org/10.1103/PHYSREVD.76.063505
Faulkner, Thomas, Yi, Mao, Tegmark, Max, MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139, Bunn, Emory F, and MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139. 2007. "Constraining f(R) gravity as a scalar-tensor theory". United States. https://doi.org/10.1103/PHYSREVD.76.063505.
@article{osti_21027755,
title = {Constraining f(R) gravity as a scalar-tensor theory},
author = {Faulkner, Thomas and Yi, Mao and Tegmark, Max and MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139 and Bunn, Emory F and MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139},
abstractNote = {We search for viable f(R) theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar system constraints either by giving the scalar a high mass or by exploiting the so-called chameleon effect. However, in both cases, it appears likely that any late-time cosmic acceleration will be observationally indistinguishable from acceleration caused by a cosmological constant. We also explore further observational constraints from, e.g., big bang nucleosynthesis and inflation.},
doi = {10.1103/PHYSREVD.76.063505},
url = {https://www.osti.gov/biblio/21027755}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 6,
volume = 76,
place = {United States},
year = {Sat Sep 15 00:00:00 EDT 2007},
month = {Sat Sep 15 00:00:00 EDT 2007}
}