Cosmic Surveys and the Quantum Universe

Abstract: Understanding the quantum nature of accelerating cosmologies is essential to making sense of the past, present, and future of our Universe. One important quantity relevant to the dynamics of these epoches is the spectrum of quantum fluctuations, organized by scaling dimensions that control how these fluctuations redshift away. When these fluctuations are coupled to the inflaton in the early universe, this scaling behavior appears in the statistics of the density fluctuations and can be measured with galaxy surveys. Remarkably, self-consistency of these late universe observations with the symmetries of the early universe place non-trivial constraints on both the dynamics of inflation and the statistics of galaxies. In this talk, I will explain how these connections arise, what they can tell us about the Universe, and the current constraints and future prospects for measuring these dimensions with cosmic surveys.

HEP - theorymathematical physicsquantum physics

Audience: researchers in the topic

( video )

Purdue HET

Series comments: The recorded talks will be available on YouTube here: www.youtube.com/playlist?list=PLxU3vHZccQj64m9zsQR74D5WP1z1g4t1J