Is cosmic speed-up due to new gravitational physics?
Sean M. CarrollEnrico Fermi Institute, Department of Physics, and Center for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637-1433, USAVikram DuvvuriEnrico Fermi Institute, Department of Physics, and Center for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637-1433, USAMark TroddenDepartment of Physics, Syracuse University, Syracuse, New York 13244-1130, USAMichael S. TurnerDepartment of Astronomy & Astrophysics, University of Chicago, Chicago, Illinois 60637-1433, USA
2004en
ABI
Annotatsiya
We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of general relativity, of the form ${R}^{\ensuremath{-}n}$ with $n>0.$ This model eliminates the need for a nonzero cosmological constant or any other form of dark energy, attributing a purely gravitational origin to the acceleration of the universe.
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