Categorizing Different Approaches to the Cosmological Constant Problem
نویسندگان
چکیده
منابع مشابه
A Solution to the Cosmological Constant Problem
The fluctuations of the vacuum energy are treated as a non-equilibrium process and a stochastic model for the cosmological constant is presented, which yields a natural explanation for the smallness or zero value of the constant in the present epoch and its large value in an era of inflation in the early universe. Typeset using REVTEX 1 It is widely considered that the problem of the cosmologic...
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The status of the cosmological constant Λ has long been discussed, whereas it is clearly established in General Relativity (GR) as universal constant. Therefore, similarly to Newton constant of gravitation G, its value has to be estimated from observations. However, such an estimate does not agree by hundred orders of magnitude with its expected value as obtained from quantum field theories by ...
متن کاملA Solution to the Cosmological Constant Problem
The status of the cosmological constant Λ has long been discussed, whereas it is clearly established in General Relativity (GR) as universal constant. Therefore, similarly to Newton constant of gravitation G, its value has to be estimated from observations. However, such an estimate does not agree by hundred orders of magnitude with its expected value as obtained from quantum field theories by ...
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We prove that Weyl invariant theories of gravity possess a remarkable property which, under very general assumptions, explains the stability of flat space-time. We show explicitly how conformal invariance is broken spontaneously by the vacuum expectation value of an unphysical scalar field; this process induces general relativity as an effective long distance limit. We show that all ghost degre...
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ژورنال
عنوان ژورنال: Foundations of Physics
سال: 2006
ISSN: 0015-9018,1572-9516
DOI: 10.1007/s10701-005-9042-8