Cosmic attractors and gauge hierarchy
Abstract
We suggest a new cosmological scenario which naturally guarantees the smallness of scalar masses and vacuum expectation values , without invoking supersymmetry or any other (nongravitationally coupled) new physics at low energies. In our framework, the scalar masses undergo discrete jumps due to nucleation of closed branes during (eternal) inflation. The crucial point is that the step size of variation decreases in the direction of decreasing scalar mass. This scenario yields exponentially large domains with a distribution of scalar masses, which is sharply peaked around a hierarchically small value of the mass. This value is the “attractor point” of the cosmological evolution.
 Publication:

Physical Review D
 Pub Date:
 September 2004
 DOI:
 10.1103/PhysRevD.70.063501
 arXiv:
 arXiv:hepth/0304043
 Bibcode:
 2004PhRvD..70f3501D
 Keywords:

 98.80.Cq;
 Particletheory and fieldtheory models of the early Universe;
 High Energy Physics  Theory;
 Astrophysics;
 High Energy Physics  Phenomenology
 EPrint:
 Phys.Rev. D70 (2004) 063501