School of Physical and Chemical Sciences, Te Kura Matū, Seminar Series

Constraining the primordial universe on small distance scales

Speaker

Dr Shaun Hotchkiss

Institute

Department of Physics, Faculty of Science, University of Auckland

Time & Place

Fri, 01 Jun 2018 11:00:00 NZST in Room 531 in the WEST Building (formerly Rutherford)

All are welcome

Abstract

The cosmic microwave background and large scale structure of the universe allow us to see what the density fluctuations in the universe were like on large scales (e.g. >30 Mpc) in the early universe. The statistical nature of these fluctuations can tell us things about even earlier epochs in the universe, e.g. about inflation. However, the smaller scales of the universe (<< 30 Mpc) are harder to constrain, despite possessing more statistical information. After a brief overview of the successful large scale stuff I will talk about how we are trying to constrain the small scales through (the so far non-detection of) primordial black holes, ultracompact minihalos and other compact structures.

Biography

Learn more about Shaun here:-https://unidirectory.auckland.ac.nz/profile/s-hotchkiss