On string cosmology and the RG flow in 2D field theory
Abstract
Time-dependent solutions of bosonic string theory resemble renormalisation group trajectories in the space of 2D field theories: they often interpolate between repulsive and attractive static solutions. It is shown that the attractive static solutions are those whose spatial sections are minima of c-25, where c is the ``c-function''. The size of the domain of attraction of such a solution may be a measure of the probability of the corresponding string vacuum. Our discussion has also an implication for the RG flow in theories coupled to dynamical 2D gravity: the flow from models with c > 25 to models with c < 25 is forbidden.
- Publication:
-
Nuclear Physics B
- Pub Date:
- September 1994
- DOI:
- 10.1016/0550-3213(94)90131-7
- arXiv:
- arXiv:hep-th/9404180
- Bibcode:
- 1994NuPhB.426..187S
- Keywords:
-
- High Energy Physics - Theory
- E-Print:
- 16 pages, Latex, BUTP-94/7, Imperial/TP/93-94/29 (some footnotes and references added.)