Is Our Universe Decaying at an Astronomical Rate?
arXiv:hep-th/0612137 · doi:10.1016/j.physletb.2008.08.039
Abstract
Unless our universe is decaying at an astronomical rate (i.e., on the present cosmological timescale of Gigayears, rather than on the quantum recurrence timescale of googolplexes), it would apparently produce an infinite number of observers per comoving volume by thermal or vacuum fluctuations (Boltzmann brains). If the number of ordinary observers per comoving volume is finite, this scenario seems to imply zero likelihood for us to be ordinary observers and minuscule likelihoods for our actual observations. Hence, our observations suggest that this scenario is incorrect and that perhaps our universe is decaying at an astronomical rate.
4 pages, RevTeX4
References in corpus (9)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Sinks in the Landscape, Boltzmann Brains, and the Cosmological Constant Problem
- Holographic probabilities in eternal inflation
- Is Our Universe Likely to Decay within 20 Billion Years?
- Domain walls, near-BPS bubbles, and probabilities in the landscape
- Hurdles for Recent Measures in Eternal Inflation
- Return of the Boltzmann Brains
- A measure of the multiverse
- Eternal observers and bubble abundances in the landscape
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- Astronomical bounds on future big freeze singularity
- The Born Rule Dies
- Asymptotic Observables and the Swampland
- Cosmological Measures without Volume Weighting
- Evidence for a bound on the lifetime of de Sitter space
- Eternal Inflation, past and future
- The status of cosmological natural selection
- Observational Selection Effects in Quantum Cosmology
- Arrow of Time in String Theory
- Initial Conditions for Bubble Universes
- Agnesi Weighting for the Measure Problem of Cosmology
- No-Bang Quantum State of the Cosmos
- Typicality, Freak Observers and the Anthropic Principle of Existence
- Possible Anthropic Support for a Decaying Universe: A Cosmic Doomsday Argument
- Spacetime Average Density (SAD) Cosmological Measures
- Horizon Complementarity and Casimir Violations of the Null Energy Condition
- The Many Computations Interpretation (MCI) of Quantum Mechanics
- Disentangling the Cosmic/Comoving Duality: The Cognitive Stability and Typicality Tests