1-5 July 2019
Faculty of Physics, University of Warsaw
Europe/Warsaw timezone

Understanding the dynamical nature of late-time cosmic acceleration from dark energy and f(T) modified gravity

1 Jul 2019, 16:20
45m
Faculty of Physics, University of Warsaw

Faculty of Physics, University of Warsaw

conference hall 0.03, Faculty of Physics, University of Warsaw ul. Pasteura 5, 02-093 Warszawa Poland

Speaker

Prof. Yi-fu Cai (University of Science and Technology of China)

Description

In this talk I will briefly introduce the present understanding about the cosmic acceleration at present from the perspective of phenomenological study. I will review the latest observational status of the late-time cosmic acceleration and then depict how to do the model building of dynamical dark energy. Afterwards, I will also give an introduction to a type of torsional based modified gravity, which can also realize the cosmic acceleration at present. This so-called f(T) gravity and beyond theories can be depicted in a language of effective field theory and thus we can examine certain operators that are most connected with various cosmological observations.

Presentation Materials