Sep 12 – 16, 2016
Europe/Zurich timezone
There is a live webcast for this event.

Challenges to Cosmic Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure

Sep 15, 2016, 3:40 PM
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium


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Oral Contributions Cosmology & Gravitational Waves Cosmology & Gravitational Waves


Dr Lucas Lombriser (University of Edinburgh)


Scalar-tensor modifications of gravity have long been considered as an alternative explanation for the late-time accelerated expansion of our Universe. I will first show that a rigorous discrimination between acceleration from modified gravity and from a cosmological constant or dark energy is not possible with observations of the large-scale structure alone. I will then demonstrate how gravitational-wave observations break this dark degeneracy and how the combination of the two challenges the concept of cosmic acceleration from a genuine scalar-tensor modification of gravity.

Primary author

Dr Lucas Lombriser (University of Edinburgh)

Presentation materials