Entanglement and Complexity: Gravity and Quantum Mechanics
Why Hacker News recommends it
Commenters recommend it as a clear, characteristically engaging Susskind lecture for people trying to grasp the entanglement and gravity connection.
What it is
Leonard Susskind lectures at Stanford on how gravity and quantum information theory have merged into a new way of thinking about physics. He covers entanglement and complexity, with applications from black holes to strange metals and the foundations of quantum mechanics.
Recommended by 4 HN commenters across 4 different months, 2015 to 2023.
What Hacker News said
Recommends jharohit · 2015-11 · on “SLAC Theorist Lance Dixon Explains Quantum Gravity”
Mr.Susskind has a Stanford lecture on this topic detailing the physics in his own unique & awesome way [this video]
Recommends ithkuil · 2019-01 · on “Strangeness of Black Holes”
I found these lectures by Leonard Susskind very insightful: - Leonard Susskind on The World As Hologram ( [LINK] ) - Leonard Susskind | "ER = EPR" or "What's Behind the Horizons of Black Holes?" ( [LINK] ) - Entanglement and Complexity: Gravity and Quantum Mechanics ( [this video] )
Recommends philipov · 2019-04 · on “Travel through wormholes is possible, but slow”
How about another lecture by Leonard Susskind? I'm just repeating his ideas! The gist of it is that the connectivity of space is related to the patterns of entanglement between particles in the quantum foam. If you were to break that entanglement, you could disconnect two regions of space. [this video]
Recommends hughesjj · 2023-07 · on “The Physicist Who’s Challenging the Quantum Orthodoxy”
I'm definitely into the "it's an emergent phenomena" camp. I think it's inherently relational, as that's a more efficient way to encode geometry rather than space itself being a quantized "thing". Afaik this theory is the "leading"/imho most promising theory of "quantum gravity", that being the "gravity = entanglement" conjecture and the related ideas of "Complexity= action/volume/whatever" that susskind and many others have been developing for the past 20 so years. All that said I'm nowhere near a physicist and am probably just spewing a total misunderstanding of the situation from my armchair. That said, I've been incessantly watching lectures in this space to try to beat an understanding
Cites philipov · 2017-10 · on “Newfound Wormhole Allows Information to Escape Black Holes”
A black hole is a fast scrambler and very quickly comes to thermal equilibrium (max entropy). However, the complexity continues to increase long after thermal equilibrium, and that's what is thought to be analogous to the length of the wormhole growing (at the speed of light, no less). [0]: [this video]