Constraining dark energy

Abstract

In this paper we propose a mechanism that protects theories violating a holographic bound suggested in arXiv:1203.5476 from developing accelerated expansion. The mechanism builts on work on transplanckian physics, and a non-trivial choice of vacuum states. If correct, it lends further support for detectable signatures in the CMBR signalling new physics.

8 pages. arXiv admin note: text overlap with arXiv:astro-ph/0606474. Minor misprints corrected

References in corpus (2)

• Challenges for String Cosmology
• Quantum Gravity Constraints on Inflation

Cited by in corpus (5)

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• Observational Constraints on Oscillating Dark-Energy Parametrizations
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• Phantom Dirac-Born-Infeld Dark Energy