# Black Holes, Holography, and Quantum Error Correction

- Institution: CERN
- Department: Theory Colloquium
- Speaker: Daniel Harlow
- Year: 2017
- Language: English
- Subjects: Physics
- Source: [CERN](https://videos.cern.ch/record/3014392)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

How can it be that a local quantum field theory in some number of spacetime dimensions can "fake" a local gravitational theory in a higher number of dimensions? How can the Ryu-Takayanagi Formula say that an entropy is equal to the expectation value of a local operator? Why do such things happen only in gravitational theories? In this talk I will explain how a new interpretation of the AdS/CFT correspondence as a quantum error correcting code provides satisfying answers to these questions, and more generally gives a natural way of generating simple models of the correspondence. No familiarity with AdS/CFT or quantum error correction is assumed, but the former would still be helpful. .

0:00:00 Slide 1

0:01:00 Slide 2

0:01:18 Slide 3

0:01:39 Slide 4

0:02:11 Slide 5

0:03:01 Slide 6

0:03:31 Slide 7

0:04:00 Slide 8

0:04:31 Slide 9

0:06:03 Slide 10

0:06:22 Slide 11

0:06:39 Slide 12

0:07:31 Slide 13

0:08:14 Slide 14

0:08:31 Slide 15

0:08:51 Slide 16

0:08:56 Slide 17

0:09:06 Slide 18

0:09:45 Slide 19

0:10:03 Slide 20

0:11:22 Slide 21

0:11:28 Slide 22

0:11:58 Slide 23

0:12:06 Slide 24

0:12:14 Slide 25

0:12:22 Slide 26

0:12:55 Slide 27

0:13:13 Slide 28

0:13:21 Slide 29

0:13:28 Slide 30

0:13:39 Slide 31

0:13:56 Slide 32

0:14:00 Slide 33

0:16:01 Slide 34

0:16:12 Slide 35

0:18:41 Slide 36

0:18:50 Slide 37

0:18:56 Slide 38

0:19:11 Slide 39

0:19:23 Slide 40

0:19:28 Slide 41

0:19:47 Slide 42

0:20:02 Slide 43

0:20:09 Slide 44

0:20:34 Slide 45

0:20:53 Slide 46

0:21:01 Slide 47

0:21:16 Slide 48

0:21:38 Slide 49

0:22:05 Slide 50

0:22:45 Slide 51

0:23:04 Slide 52

0:23:09 Slide 53

0:23:39 Slide 54

0:24:33 Slide 55

0:24:54 Slide 56

0:25:12 Slide 57

0:25:53 Slide 58

0:27:58 Slide 59

0:28:14 Slide 60

0:29:41 Slide 61

0:29:59 Slide 62

0:32:07 Slide 63

0:32:35 Slide 64

0:33:07 Slide 65

0:33:33 Slide 66

0:34:16 Slide 67

0:34:26 Slide 68

0:34:30 Slide 69

0:34:34 Slide 70

0:35:19 Slide 71

0:35:48 Slide 72

0:35:55 Slide 73…

## Lectures

1. [Black Holes, Holography, and Quantum Error Correction](https://invisiblenetwork.ai/learn/cern/3014392/7f89e67ed64a), 1 h 18 min (CERN's player)