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Theories of the Cosmological Constant
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In this paper, a brief summary of the present theoretical understanding regarding the value of the cosmological constant is given, and the probability distribution of the observed cosmology constant in theories with a large number of subuniverses (i.e., different expanding regions, or different terms in the wave function of the universe).Abstract:
This is a talk given at the conference ``Critical Dialogues in Cosmology'' at Princeton University, June 24-- 27, 1996. It gives a brief summary of our present theoretical understanding regarding the value of the cosmological constant, and describes how to calculate the probability distribution of the observed cosmological constant in cosmological theories with a large number of subuniverses (i. e., different expanding regions, or different terms in the wave function of the universe) in which this constant takes different values.read more
Citations
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Journal ArticleDOI
Nonminimal coupling and quintessence
Orfeu Bertolami,P. J. Martins +1 more
TL;DR: In this paper, the authors analyzed the conditions under which the dynamics of a self-interacting Brans-Dicke field can account for the accelerated expansion of the universe.
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TASI Lectures on the Cosmological Constant
Raphael Bousso,Raphael Bousso +1 more
TL;DR: The energy density of the vacuum, Lambda, is at least 60 orders of magnitude smaller than several known contributions to it as discussed by the authors, and the possibility remains that Lambda is fundamentally variable, though constant over large spacetime regions.
Journal ArticleDOI
Properties of the scale factor measure
TL;DR: In this paper, the scale factor measure is reformulated as a local measure, where observations are weighted by integrating their physical density along a geodesic that starts in the longest-lived metastable vacuum.
Journal ArticleDOI
Quantization of Four-form Fluxes and Dynamical Neutralization of the Cosmological Constant
Raphael Bousso,Joseph Polchinski +1 more
TL;DR: In this article, it was shown that with multiple fluxes the allowed values can form a sufficiently dense ''discretuum'' for M theory compactifications on manifolds with non-trivial three-cycles.
Dissertation
The Cosmological Constant Problem, an Inspiration for New Physics
TL;DR: In this article, the authors compared different approaches to the cosmological constant problem, which is at the edge of elementary particle physics and cosmology, and concluded that so far none of the approaches gives a satisfactory solution.
References
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Book
The Anthropic Cosmological Principle
TL;DR: In this article, Barrow and Tipler examined the question of Mankind's place in the universe, taking the reader on a tour of many scientific disciplines and offering fascinating insights into issues such as the nature of life, the serach for extraterrestrial intelligence, and the past history and fate of our universe.
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