Uploaded November 2022 | Updated September 2026, 3 weeks ago

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Title: The Quantum World and the Early Universe
Guest Speaker: Ayngaran Thavanesan, Ph.D. candidate, Cambridge University
Summary: Learn about the science of Cosmology and how the universe began as a hot Big Bang and evolved over time. Ayngaran explains that we tend to think of a vacuum as space-time devoid of matter and energy, but in reality, in a vacuum, there are energy fluctuations that constantly pop in and out of existence. Thus, the universe emerged as a quantum fluctuation out of “nothing.” Ayngaran states that the early universe can be thought of as a massive ‘cosmological collider.’ He is currently investigating how gravitational waves from the cosmological inflation caused the polarization of the cosmic microwave background.

Chapters
0:00 Introduction
9:08 Poll Question
11:57 Cosmology and the universe
18:02 Poll Question
21:37 Cosmology Overview
24:44 Poll Question
27:15 Space Vacuum
28:37 Quantum physics and the early universe
30:30 Poll Question
33:32 Cosmological collider
36:40 Cosmological bootstrap
37:55 Gravitation waves from inflation
39:09 A day in the life of a physicist

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