Sean Carroll: Quantum Mechanics and the Many-Worlds Interpretation

Sean Carroll is a theoretical physicist at Caltech and
Santa Fe Institute specializing in quantum mechanics, arrow of
time, cosmology, and gravitation. He is the author of Something
Deeply Hidden and several popular books and he is the host of a
great podcast called Mindscape. This is the second
time Sean has been on the podcast. You can watch the first
time on YouTube or listen to the first time on its
episode page. This conversation is part of the
Artificial Intelligence podcast. If you would
like to get more information about this podcast go to
https://lexfridman.com/ai or connect with @lexfridman
on Twitter, LinkedIn,
Facebook, Medium, or YouTube
where you can watch the video versions of these
conversations. If you enjoy the podcast, please rate it 5 stars
on Apple Podcasts or support it on
Patreon. Here’s the outline with timestamps for this
episode (on some players you can click on the timestamp to jump
to that point in the episode):


00:00 – Introduction
01:23 – Capacity of human mind to understand physics
10:49 – Perception vs reality
12:29 – Conservation of momentum
17:20 – Difference between math and physics
20:10 – Why is our world so compressable
22:53 – What would Newton think of quantum mechanics
25:44 – What is quantum mechanics?
27:54 – What is an atom?
30:34 – What is the wave function?
32:30 – What is quantum entanglement?
35:19 – What is Hilbert space?
37:32 – What is entropy?
39:31 – Infinity
42:43 – Many-worlds interpretation of quantum mechanics
1:01:13 – Quantum gravity and the emergence of spacetime
1:08:34 – Our branch of reality in many-worlds
interpretation
1:10:40 – Time travel
1:12:54 – Arrow of time
1:16:18 – What is fundamental in physics
1:16:58 – Quantum computers
1:17:42 – Experimental validation of many-worlds and emergent
spacetime
1:19:53 – Quantum mechanics and the human mind
1:21:51 – Mindscape podcast