• Corpus ID: 133599380

A pr 2 01 1 UCB-PTH-11 / 02 Physical Theories , Eternal Inflation , and Quantum Universe

@inproceedings{Nomura2013AP2,
  title={A pr 2 01 1 UCB-PTH-11 / 02 Physical Theories , Eternal Inflation , and Quantum Universe},
  author={Yasunori Nomura},
  year={2013}
}
Infinities in eternal inflation have long been plaguing cosmology, making any predictions highly sensitive to how they are regulated. The problem exists already at the level of semiclassical general relativity, and has a priori nothing to do with quantum gravity. On the other hand, we know that certain problems in semi-classical gravity, for example physics of black holes and their evaporation, have led to understanding of surprising, quantum natures of spacetime and gravity, such as the… 
Prepared for submission to JCAP Watchers of the multiverse
TLDR
This work considers a measure based on a probe geodesic which undergoes an infinite number of passages through crunches, which can be thought of as the world-line of an eternal “watcher”, collecting data in an orderly fashion.
Watchers of the multiverse
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Global structure of the multiverse and the measure problem
An unresolved question in inflationary cosmology is the assignment of probabilities to different types of events that can occur in the eternally inflating multiverse. We explore the possibility that
A Local Wheeler-DeWitt Measure for the String Landscape
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References

SHOWING 1-10 OF 172 REFERENCES
An Introduction to Black Holes, Information And The String Theory Revolution: The Holographic Universe
Over the last decade the physics of black holes has been revolutionized by developments that grew out of Jacob Bekenstein's realization that black holes have entropy. Stephen Hawking raised profound
The Anthropic Cosmological Principle
Is there any connection between the vastness of the universes of stars and galaxies and the existence of life on a small planet out in the suburbs of the Milky Way? This book shows that there is. In
Decoherence and the Quantum-To-Classical Transition
Introducing Decoherence.- The Basic Formalism and Interpretation of Decoherence.- Decoherence Is Everywhere: Localization Due to Environmental Scattering.- Master-Equation Formulations of
Iii
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Phys
  • Rev. Lett. 59, 2607
  • 1987
Phys
  • Rev. D 48, 3743 (1993) [arXiv:hep-th/9306069]; L. Susskind, Phys. Rev. Lett. 71, 2367 (1993) [arXiv:hep-th/9307168]; C. R. Stephens, G. ’t Hooft and B. F. Whiting, Class. Quant. Grav. 11, 621
  • 1994
JHEP 12
  • 062
  • 2002
Phys
  • Lett. B 307, 25 (1993) [arXiv:gr-qc/9304015]; A. Linde, D. Linde and A. Mezhlumian, Phys. Rev. D 49, 1783
  • 1994
Phys
  • Rev. D 78, 063520 (2008) [arXiv:0805.2173 [hep-th]]; R. Bousso, B. Freivogel and I.-S. Yang, Phys. Rev. D 79, 063513
  • 2009
Cosmology (Oxford
  • 2008
...
...