Acoustic Dark Matter And Large Scale Structure

Speaker: Yuhsin Tsai, Maryland

When: April 12, 2017 (Wed), 04:00PM to 05:00PM (add to my calendar)
Location: PRB 565

This event is part of the Particle and Fields Seminar Series.

The standard paradigm of collisionless cold dark matter is in tension with measurements on large scales. In particular, the best fit values of the Hubble rate and the matter density perturbation inferred from the CMB seem inconsistent with the results from direct measurements. In this talk, I will discuss these issues and propose a solution to both problems from a dark sector that contains dark acoustic oscillations with dark fluid. Such a solution can be tested by future experiments designed to probe the CMB and large scale structure.