Relaxation of the cosmological constant at inflation?
نویسنده
چکیده
We suggest that the cosmological constant has been relaxed to its present, very small value during the inflationary stage of the evolution of the Universe. This requires relatively low scale, very long duration and unconventional source of inflation. We present a concrete mechanism of the cosmological constant relaxation at the inflationary epoch. PACS number(s): 04.20.Cv, 98.80.Cq Typeset using REVTEX
منابع مشابه
5 v 1 1 0 N ov 1 99 9 Relaxation of the cosmological constant at inflation ?
We suggest that the cosmological constant has been relaxed to its present, very small value during the inflationary stage of the evolution of the Universe. This requires relatively low scale, very long duration and unconven-tional source of inflation. We present a concrete mechanism of the cosmolog-ical constant relaxation at the inflationary epoch.
متن کاملVacuum Energy, Cosmological Supersymmetry Breaking and Inflation from Colliding Brane
In the context of colliding brane worlds I discuss a toy cosmological model, developed in collaboration with E. Gravanis, which arguably produces inflation and a relaxing to zero cosmological “constant” hierarchically small as compared to the supersymmetry breaking (TeV) scale. Supersymmetry breaking is induced by compactification of the brane worlds on magnetized tori. The crucial ingredient i...
متن کاملSelf-tuning of Cosmological Constant and Exit from Inflation *
I review the recent 5D self-tuning solutions of the cosmological constant problem, and try to unify two cosmological constant problems within the framework of the self-tuning solutions. One problem, the large cosmological constant needed for inflation, is interpreted by starting with the parameters allowing only the dS vacuum, and the vanishing cosmological constant at a true vacuum is realized...
متن کاملUniverse Decay, Inflation and the Large Eigenvalue of the Cosmological Constant Seesaw
We discuss implications of the large eigenvalue of the cosmological constant seesaw mechanism extending hep-th/0602112 and hep-th/0604108. While the previous papers focused on the small eigenvalue as a cosmological constant associated with the accelerating Universe, here we draw attention to the physical implications of the large eigenvalue. In particular we find that the large eigenvalue can g...
متن کاملv 4 1 A pr 1 99 8 Open Inflation , the Four Form and the Cosmological Constant
Fundamental theories of quantum gravity such as supergravity include a four form field strength which contributes to the cosmological constant. The inclusion of such a field into our theory of open inflation [1] allows an anthropic solution to the cosmological constant problem in which cosmological constant gives a small but non-negligible contribution to the density of today's universe. We inc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999