RT Journal Article
T1 Big rip in shift-symmetric kinetic gravity braiding theories
A1 Borislavov Vassilev, Teodor
A1 Martín Moruno, María Del Prado
A1 Bouhmadi López, Miriam
AB We revise the future fate of a group of scalar-tensor theories known as kinetic gravity braiding models. As it is well-known, these theories can safely drive the expansion of the universe towards a future de Sitter state if the corresponding Lagrangian is invariant under constant shifts in the scalar field. However, this is not the only possible future state of these shift-symmetric models as we show in this letter. In fact, future cosmic singularities characterized by a divergence of the energy density can also appear in this framework. We present an explicit example where a big rip singularity is the only possible future fate of the cosmos.
PB Elsevier
SN 0370-2693
YR 2023
FD 2023-01-20
LK https://hdl.handle.net/20.500.14352/99622
UL https://hdl.handle.net/20.500.14352/99622
LA eng
NO Borislavov Vasilev, Teodor, et al. «Big Rip in Shift-Symmetric Kinetic Gravity Braiding Theories». Physics Letters B, vol. 838, marzo de 2023, p. 137711. DOI.org (Crossref), https://doi.org/10.1016/j.physletb.2023.137711.
NO Ministerio de Economía y Competitividad (España)
NO Universidad Complutense de Madrid
NO Banco de Santander
NO Universidad del País Vasco
NO Basque Foundation of Science Ikerbasque
NO Gobierno Vasco
DS Docta Complutense
RD 10 abr 2025