Information carrying capacity of a cosmological constant

Abstract

We analyze the exchange of information in different cosmological backgrounds when sender and receiver are timelike separated and communicate through massless fields (without the exchange of light-signals). Remarkably, we show that the dominance of a cosmological constant makes the amount of recoverable information imprinted in the field by the sender extremely resilient: it does not decay in time or with the spatial separation of sender and receiver, and it actually increases with the rate of expansion of the Universe. This is in stark contrast with the information carried by conventional light-signals and with previous results on timelike communication through massless fields in matter dominated cosmologies.

9 pages, 3 figures. RevTeX 4.1. v2: Minor typos corrected and updated to match published version (including minor title change)

References in corpus (7)

• Entangling Power of an Expanding Universe
• Entanglement in curved spacetimes and cosmology
• Information transmission without energy exchange
• Quantum Energy Teleportation in Spin Chain Systems
• Violation of the strong Huygen's principle and timelike signals from the early Universe
• Unique Fock quantization of scalar cosmological perturbations
• Distinguishing de Sitter universe from thermal Minkowski spacetime by Casimir-Polder-like force

Cited by in corpus (3)

• Unruh-DeWitt detector in dimensionally-reduced static spherically symmetric spacetimes
• Transmission of Information in Non-Local Field Theories
• Massive spin zero fields in cosmology and the tail-free property