Speaker
Mr
Mathias Garny
(Max Planck Institute for Nuclear Physics)
Description
We investigate the role of quantum corrections within the quintessence dark energy
scenario in the framework of low-energy effective field theory. In this framework,
the quintessence field, which can drive an accelerated cosmic expansion, is viewed as
arising from a high-energy theory, which is governed by a UV-scale of the order of
the GUT or Planck scales. We study the low-energy effective action, discuss suitable
approximations, and extend previous studies by identifying and resumming the relevant
contributions, which explicitly depend on the UV-scale. For two exemplary classes of
models the resulting modified potential is used to study their robustness.
Author
Mr
Mathias Garny
(Max Planck Institute for Nuclear Physics)