1.
Eur Phys J C Part Fields
; 83(4): 308, 2023.
Artigo
em Inglês
| MEDLINE
| ID: mdl-37096219
RESUMO
We argue that, in the same way that in a black hole space-time VECROs will form in order to cancel the gravitational effects of a collapsing mass shell and prevent the formation of a singularity, in a contracting universe a gas of VECROs will form to hold up the contraction, prevent a Big Crunch singularity, and lead to a nonsingular cosmological bounce.
2.
Eur Phys J C Part Fields
; 81(1): 39, 2021.
Artigo
em Inglês
| MEDLINE
| ID: mdl-33505212
RESUMO
In String Gas Cosmology, the simplest shape modulus fields are naturally stabilized by taking into account the presence of string winding and momentum modes. We determine the resulting effective potential for these fields and show that it obeys the de Sitter conjecture, one of the swampland criteria for effective field theories to be consistent with superstring theory.