2 papers
gr-qc2020
Transient weak gravity in scalar-tensor theories
Manuel Wittner, Giorgio Laverda, Oliver F. Piattella +1
Sub-horizon perturbations in scalar-tensor theories have been shown to grow generically faster than in uncoupled models due to a positive, additive Yukawa force. In such cases, the…
hep-th2019
The -term Problem and other Challenges of Stringy Quintessence
Arthur Hebecker, Torben Skrzypek, Manuel Wittner
We attempt a systematic analysis of string-theoretic quintessence models as an alternative to metastable de Sitter vacua. It appears that, within the boundaries of what is known, l…