dc.contributor.author |
Boisseau B. |
|
dc.contributor.author |
Giacomini H. |
|
dc.contributor.author |
Polarski D. |
|
dc.contributor.author |
Starobinsky A. |
|
dc.date.accessioned |
2018-09-18T20:36:40Z |
|
dc.date.available |
2018-09-18T20:36:40Z |
|
dc.date.issued |
2015 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/141668 |
|
dc.description.abstract |
© 2015 IOP Publishing Ltd and Sissa Medialab srl . We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity models in which the scalar field potential may be negative, and even unbounded from below. We find a set of viable solutions with nonzero measure in the space of initial conditions passing a bounce, even in the presence of a radiation component, and approaching a constant gravitational coupling afterwards. Hence we have a model with a minimal modification of gravity in order to produce a bounce in the early universe with gravity tending dynamically to general relativity (GR) after the bounce. |
|
dc.subject |
cosmic singularity |
|
dc.subject |
dark energy theory |
|
dc.subject |
modified gravity |
|
dc.title |
Bouncing universes in scalar-tensor gravity models admitting negative potentials |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
7 |
|
dc.relation.ispartofseries-volume |
2015 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.source.id |
SCOPUS-2015-2015-7-SID84937808800 |
|