Dominance of a Dynamical Measure and Disappearance of the Cosmological Constant
| dc.creator | Guendelman, E. I. | |
| dc.creator | Kaganovich, A. B. | |
| dc.date | 1998-06-11 | |
| dc.date.accessioned | 2026-07-07T03:32:27Z | |
| dc.date.available | 2026-07-07T03:32:27Z | |
| dc.description | We consider an action which consists of two terms: the first S_{1}=\int L_{1}Φd^{4}x and the second S_{2}=\int L_{2}\sqrt{-g}d^{4}x where Φis a measure which has to be determined dynamically. S_{1} satisfies the requirement that the transformation L_{1}\to L_{1}+const does not effect equations of motion. In the first order formalism, a constraint appears which allows to solve χ=Φ/\sqrt{-g}. Then, in a true vacuum state (TVS), χ\to\infty and in the conformal Einstein frame no singularities are present, the energy density of TVS is zero without fine tuning of any scalar potential in S_{1} or S_{2}. When considering only a linear potential for a scalar field ϕin S_{1}, the continuous symmetry ϕ\toϕ+const is respected. Surprisingly, in this case SSB takes place while no massless ("Goldstone") boson appears. | |
| dc.description | 10 pages | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9806053 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9806053 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36236 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Dominance of a Dynamical Measure and Disappearance of the Cosmological Constant | |
| dc.type | text |