منابع مشابه
Eternal inflation and chaotic terminology
“Eternal inflation” is often confused with “chaotic inflation”. Moreover, the term “chaotic inflation” is being used in three different meanings (all of them unrelated to eternal inflation). I make some suggestions in an effort to untangle this terminological mess. I also give a brief review of the origins of
متن کاملInflation and Eternal Inflation
The basic workings of inflationary models are summarized, along with the arguments that strongly suggest that our universe is the product of inflation. The mechanisms that lead to eternal inflation in both new and chaotic models are described. Although the infinity of pocket universes produced by eternal inflation are unobservable, it is argued that eternal inflation has real consequences in te...
متن کاملRegulating Eternal Inflation
We present an interpretation of the physics of space-times undergoing eternal inflation by repeated nucleation of bubbles. In many cases the physics can be interpreted in terms of the quantum mechanics of a system with a finite number of states. If this interpretation is correct, the conventional picture of these space-times is misleading.
متن کاملHolographic probabilities in eternal inflation.
In the global description of eternal inflation, probabilities for vacua are notoriously ambiguous. The local point of view is preferred by holography and naturally picks out a simple probability measure. It is insensitive to large expansion factors or lifetimes and so resolves a recently noted paradox. Any cosmological measure must be complemented with the probability for observers to emerge in...
متن کاملEnergy Conditions in Eternal Inflation
We show that the eternal inflation scenario requires violations of the Null Energy Condition (NEC) in de Sitter space. Within the context of semiclassical gravity, NEC violations are absent if the quantum state of fields is assumed to be de Sitter invariant since the expectation value of the “quantum NEC operator” vanishes. We then discuss the necessity of defining a smeared NEC operator. We fi...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 1986
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732386000129