Some Cosmological Applications of Two Measures Theory
| dc.creator | Guendelman, E. I. | |
| dc.creator | Kaganovich, A. B. | |
| dc.date | 2004-03-03 | |
| dc.date.accessioned | 2026-07-07T03:28:31Z | |
| dc.date.available | 2026-07-07T03:28:31Z | |
| dc.description | Scale invariance is considered in the context of a gravitational theory where the action, in the first order formalism, is of the form S = \int L_{1} Φd^4x + \int L_{2}\sqrt{-g}d^4x where Φis a density built out of degrees of freedom independent of the metric. For global scale invariance, a "dilaton" ϕhas to be introduced, with non-trivial potentials V(ϕ)=f_{1}e^{αϕ} in L_1 and U(ϕ) = f_{2}e^{2αϕ} in L_2. In the effective Einstein frame, this leads to a non-trivial ϕpotential (of the Morse type) which has a flat region with energy density f_{1}^{2}/4f_{2} as ϕ\to\infty. The addition of an R^{2} term produces an effective potential with two connected flat regions: one of the Planck scale, that can be responsible for early inflation, and another for the description of the present universe. | |
| dc.description | 5 pages; presented to the proceedings of the Tenth Marcel Grossmann Meeting | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0403017 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0403017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/34860 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Some Cosmological Applications of Two Measures Theory | |
| dc.type | text |