A new non-perturbative time-dependent string configuration
| dc.creator | Alexandre, Jean | |
| dc.date | 2007-08-10 | |
| dc.date.accessioned | 2026-07-07T10:57:06Z | |
| dc.date.available | 2026-07-07T10:57:06Z | |
| dc.description | A time-dependent bosonic string configuration is discussed, in graviton and dilaton backgrounds, leading to Weyl-symmetry beta-functions which are homogeneous in X^0, to any order in alpha'. As a consequence, a string reparametrization can always be implemented, such that beta functions can be cancelled, to any order in alpha'. This non-perturbative conformal invariance is valid for any target space dimension, and leads to a power law expanding Universe, for which the power vanishes if a specific relation between the dimension and dilaton amplitude holds. Finally, D=4 is the minimum dimension (in the case of a spherical world sheet) for which this configuration is consistent with a Wick rotation in a Minkowski target space. | |
| dc.description | Talk given at PASCOS-07 | |
| dc.identifier | https://arxiv.org/abs/0708.1494 | |
| dc.identifier | http://arxiv.org/abs/0708.1494 | |
| dc.identifier | AIPConf.Proc.957:289-292,2007 | |
| dc.identifier | doi:10.1063/1.2823783 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186639 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A new non-perturbative time-dependent string configuration | |
| dc.type | text |