University of Cambridge > Talks.cam > Cosmology Lunch > Derivative chameleons

Derivative chameleons

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Camille Bonvin.

With now Nobel-prize-winning observational evidence for the accelerated expansion of the Universe, we are still in search of a thorough theoretical understanding of its cause. One strong candidate in this enterprise are chameleon theories, where a new scalar degree of freedom modifies GR on cosmological scales, but is screened away in dense environments so as to comply with tight fifth force constraints. In this talk I will introduce and discuss generalized chameleon models where the conformal coupling between matter and gravitational geometries is not only a function of the chameleon field phi, but also of its derivatives via higher order co-ordinate invariants.

This talk is part of the Cosmology Lunch series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity