| Автор | Daksh Lohiya |
| Автор | Meetu Sethi |
| Дата выпуска | 1999-05-01 |
| dc.description | A search for a problem-free cosmology within the framework of an effective non-minimally coupled scalar-tensor theory is suggested. With an appropriate choice of couplings in variants of a Lee-Wick model (as also in a model supporting Q-ball solutions), non-topological solutions (NTSs), varying in size up to 10 kpc to 1 Mpc can exist. We explore the properties of a `toy' Milne model containing a distribution of NTS domains. The interior of these domains would be regions where effective gravitational effects would be indistinguishable from those expected in standard Einstein theory. For a large class of non-minimal coupling terms and the scalar effective potential, the effective cosmological constant vanishes identically. The model passes classical cosmological tests and we describe reasons to expect it to fare well as regards nucleosynthesis and structure formation. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A programme for a problem-free cosmology within the framework of a rich class of scalar-tensor theories |
| Тип | paper |
| DOI | 10.1088/0264-9381/16/5/306 |
| Electronic ISSN | 1361-6382 |
| Print ISSN | 0264-9381 |
| Журнал | Classical and Quantum Gravity |
| Том | 16 |
| Первая страница | 1545 |
| Последняя страница | 1563 |
| Аффилиация | Daksh Lohiya; Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India |
| Аффилиация | Meetu Sethi; Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India |
| Выпуск | 5 |
