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I just want to make this post as quick as possible. There is something that I believe anyone should see, perhaps even if you aren’t interested in quantum gravity at all. First of all, because it’s an unintentionally limpid lesson on a foundational point in theoretical physics, and also because it’s tragically hilarious. So, as everybody knows, black holes emit radiation at a temperature To reduce this to minimum complexity I’m going to use natural units ( c=ℏ= k B =1 𝑐 = ℏ = 𝑘 𝐵 = 1 ). So, this is the famous result of Hawking. The beauty of it is that it is part of semiclassical gravity, an intermediate step between classical and quantum gravity that doesn’t face the daunting challenges of the latter. In some sense, semiclassical gravity stops exactly one step earlier than where the infamous nonrenormalizability of gravity appears and makes the whole thing unpredictive. What this means is that it is true no matter what, independently on your preferred choice of completion into a ful

Hologrammata - Home musings of an apprentice holomancer (RSS feed) 18 Feb 2018 A small remark on Loop Quantum Gravity. 05 May 2017 A simple and rigorous proof of 26/10 dimensions in string theory 16 Mar 2017 Gravity, entropy, and life. 20 Feb 2017 Is the Planck length the minimum possible length? 07 Jan 2017 Twin paradox for literal children 07 Sep 2016 A geometric proof of Hawking radiation, through imaginary time 30 May 2016 The Riemann zeta function, the primon gas, and supersymmetry. About • Reddit --!> RSS • GitHub A small remark on Loop Quantum Gravity. 18 Feb 2018 I just want

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