TY  - JOUR
TI  - Is cosmic speed-up due to new gravitational physics?
AU  - Sean M. Carroll
AU  - Vikram Duvvuri
AU  - Mark Trodden
AU  - Michael S. Turner
PY  - 2004
JO  - Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
DO  - 10.1103/physrevd.70.043528
UR  - https://doi.org/10.1103/physrevd.70.043528
AB  - 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.
ER  -