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arXiv:1810.11563hep-th

Three Lectures on Complexity and Black Holes

Leonard Susskind

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Abstract

Given at PiTP 2018 summer program entitled "From Qubits to Spacetime." The first lecture describes the meaning of quantum complexity, the analogy between entropy and complexity, and the second law of complexity. Lecture two reviews the connection between the second law of complexity and the interior of black holes. I discuss how firewalls are related to periods of non-increasing complexity which typically only occur after an exponentially long time. The final lecture is about the thermodynamics of complexity, and "uncomplexity" as a resource for doing computational work. I explain the remarkable power of "one clean qubit," in both computational terms and in space-time terms. The lectures can also be found online at \url{https://static.ias.edu/pitp/2018/node/1796.html} .

arXiv comments
83 pages, 42 figures. This is the written version of three lectures on complexity and black holes
Journal reference
DOI
Subjects
hep-thHigh Energy Physics, Theory

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    • > There is no reference to an actual paper in the article Hover over the underlined "proposed a solution" in the first paragraph and see https://arxiv.org/abs/1810.11563 -- although the article certainly doesn't go so far as to point to e.g. §23 and the Conclusion, so I at least…

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