Well-tempering stands among the few classical methods of screening vacuum energy to deliver a late-time, low energy vacuum state. We build on the class of Horndeski models that …
A Khan, A Taylor - Journal of Cosmology and Astroparticle …, 2022 - iopscience.iop.org
The expansion of the Universe is observed to be accelerating, with the simplest solution being a classical cosmological constant. However, this receives contributions from the …
TB Vasilev, M Bouhmadi-López… - Journal of Cosmology …, 2023 - iopscience.iop.org
We revise the expansion history of the scalar field theories known as Kinetic Gravity Braiding. These theories are well-known for the possibility of driving the expansion of the …
Dynamical cancellation frameworks present a potential means of mitigating the effect of a large vacuum energy, that would otherwise ruin the late-time, low energy dynamics of the …
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 …
Degeneracy is a method to accommodate exact, low energy vacuum states in scalar-tensor gravitational models despite the presence of an arbitrarily large vacuum energy. However …
We discuss the possibility of a scalar field being the fundamental description of dark energy without the need of self-tuning any parameter. Thereby, we focus on shift-symmetric scalar …
EV Linder - arXiv preprint arXiv:2201.02211, 2022 - arxiv.org
Well tempered cosmology provides a well defined path for obtaining cosmology with a low energy cosmic acceleration despite a high (Planck) energy cosmological constant $\Lambda …
RK Muharlyamov, TN Pankratyeva - Indian Journal of Physics, 2023 - Springer
In the Bianchi I cosmology some subclasses of the Horndeski theory allow for the non- standard anisotropy behavior. For example, the anisotropy is damped near the initial …