Violation of the strong Huygen's principle and timelike signals from the early Universe

Abstract

We analyze the implications of the violations of the strong Huygens principle in the transmission of information from the early universe to the current era via massless fields. We show that much more information reaches us through timelike channels (not mediated by real photons) than it is carried by rays of light, which are usually regarded as the only carriers of information.

arXiv comment5 pages, 2 figures. RevTeX 4.1. V2: Updated to match published version. Previous title "A glimpse of the early universe without real light" modified to match Physical Review Letters published version

References in corpus (14)

• The motion of point particles in curved spacetime
• Violating Bell's inequalities in the vacuum
• Entangling Power of an Expanding Universe
• Transition rate of the Unruh-DeWitt detector in curved spacetime
• Wavepacket detection with the Unruh-DeWitt model
• Cosmological quantum entanglement
• Casimir forces on atoms in optical cavities
• Entanglement in curved spacetimes and cosmology
• Sustainable entanglement production from a quantum field
• Information transmission without energy exchange
• Quantum signalling in cavity QED
• On the Tail Problem in Cosmology
• Tales of tails in cosmology
• The fate of non-trivial entanglement under gravitational collapse

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