2.3k citations · 13.2k across the 96 of their papers we have counts for
Showing 2003 · astro-phShow all
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astro-ph2003★ 122 cited
Why is the Universe Accelerating?
Sean M. Carroll
The universe appears to be accelerating, but the reason why is a complete mystery. The simplest explanation, a small vacuum energy (cosmological constant), raises three difficult i…
astro-ph2003★ 2.3k cited
Is Cosmic Speed-Up Due to New Gravitational Physics?
Sean M. Carroll, Vikram Duvvuri, Mark Trodden +1
We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of General Relativity of the form , with . This eliminates the n…
astro-ph2003★ 1.3k cited
Can the dark energy equation-of-state parameter w be less than -1?
Sean M. Carroll, Mark Hoffman, Mark Trodden
Models of dark energy are conveniently characterized by the equation-of-state parameter w=p/ρ, where ρis the energy density and p is the pressure. Imposing the Dominant Energy Cond…