Comment on: Detecting Vanishing Dimensions Via Primordial Gravitational Wave Astronomy

Abstract

It has been recently claimed [arXiv:1102.3434] that quantum gravity models where the number of dimensions reduces at the ultraviolet exhibit a potentially observable cutoff in the primordial gravitational wave spectrum, and that this is a "generic" and "robust" test for such models, since "(2+1)-dimensional spacetimes have no gravitational degrees of freedom". We argue that such a claim is misleading.

1 page, comment to Phys. Rev. Lett. 106, 101101 (2011) [arXiv:1102.3434]

References in corpus (4)

• Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point
• Detecting Vanishing Dimensions Via Primordial Gravitational Wave Astronomy
• Searching for the Layered Structure of Space at the LHC
• Coupling running through the Looking-Glass of dimensional Reduction

Cited by in corpus (5)

• Geometry and field theory in multi-fractional spacetime
• Dimension and Dimensional Reduction in Quantum Gravity
• Reply to the "Comment on: Detecting Vanishing Dimensions Via Primordial Gravitational Wave Astronomy"
• Spin effects and compactification
• The (2+1)-dim Axial Universes -- Solutions to the Einstein Equations, Dimensional Reduction Points, and Klein-Fock-Gordon Waves