Speaker
Drew Backhouse
Description
I will present the results of arXiv:2301.02455 and arXiv:2301.08652 where it is shown that, for sufficiently low temperatures, a scalar field tunneling between two degenerate vacua on a flat FLRW background metric results in Null Energy Condition violation in the true vacuum state. The corresponding homogeneous fluid induces a cosmological bounce, after which it obtains a phantom-like equation of state and asymptotically induces De Sitter. The present mechanism is constructed without the need for exotic matter or modified gravity.
Primary authors
Drew Backhouse
Prof.
Jean Alexandre
(King's College London)
Dr
Silvia Pla
(King's College London)
