Instanton Cosmology
| dc.creator | Allen, R. E. | |
| dc.date | 1998-03-09 | |
| dc.date | 1999-02-03 | |
| dc.date.accessioned | 2026-07-07T02:26:18Z | |
| dc.date.available | 2026-07-07T02:26:18Z | |
| dc.description | A new cosmological model implies that dR/dt is constant for both t > t_c and t goes to 0, and that dR^2/dt is proportional to n_s^-1 for t_c > t > 0. Here R(t) is the cosmic scale factor, t_c is a crossover time defined in the text, and n_s is approximately constant near t_c. The behavior at intermediate times is consistent with big-bang nucleosynthesis. The behavior at short and long times offers a solution to the smoothness, monopole, and flatness problems. In addition, the long-time behavior yields a comfortably large age for the universe and predicts that the deceleration parameter q_0 is exactly zero. | |
| dc.description | A better picture is given in astro-ph/9902042: The dominant contribution to R(t) in the late universe is from the cosmological instanton, but Einstein gravity dominates in the early universe. This basic picture was already implicit in the original treatment of Ref. 1, hep-th/9612041 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9803079 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9803079 | |
| dc.identifier | A. Mondragon and R.E. Allen, in "Relativity, Particle Physics, and Cosmology: Proceedings of the Richard Arnowitt Fest" (World Scientific, Singapore, 1999) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12222 | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Instanton Cosmology | |
| dc.type | text |