A Renormalization Group Approach to the Cosmological Constant Problem
| dc.creator | Tye, S. -H. Henry | |
| dc.date | 2007-08-31 | |
| dc.date | 2007-09-15 | |
| dc.date.accessioned | 2026-07-07T08:29:23Z | |
| dc.date.available | 2026-07-07T08:29:23Z | |
| dc.description | In an earlier paper, it is proposed that, due to resonance tunneling effect, tunneling from a large cosmological constant $Λ$ site in the stringy comic landscape can be fast, while tunneling from a small $Λ$ site may take exponentially long time. Borrowing the renormalization group analysis of the conductance in the Anderson localization transition, we treat the landscape as a multi-dimensional random potential and find that the vastness of the landscape leads to a sharp transition at a small critical value $Λ_{c}$ from fast tunneling for $Λ> Λ_{c} $ to suppressed tunneling for $Λ_{c} > Λ>0$. Mobility in the landscape makes eternal inflation highly unlikely. As an illustration, we find that $Λ_{c}$ can easily be exponentially small compared to the string/Planck scale. These properties may help us in finding a qualitative understanding why today's dark energy is so small. | |
| dc.description | 25 pages, 3 figures; new appendices and references added | |
| dc.identifier | https://arxiv.org/abs/0708.4374 | |
| dc.identifier | http://arxiv.org/abs/0708.4374 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/137952 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | A Renormalization Group Approach to the Cosmological Constant Problem | |
| dc.type | text |