String Theory and Holographic Duality

Illustration of how cows at different distances in the bulk correspond to cows of different sizes at a boundary with illustrative text

In holographic duality, a quantum gravity system in a (d+1)-dimensional spacetime is equivalent to a many-body system defined on its d-dimensional boundary. The boundary system is referred to as a "hologram" of the bulk system. For more information about this image, see the syllabus section. (Image by Prof. Liu.)


MIT Course Number

8.821 / 8.871

As Taught In

Fall 2014



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Course Description

Course Features

Course Description

This string theory course focuses on holographic duality (also known as gauge / gravity duality or AdS / CFT) as a novel method of approaching and connecting a range of diverse subjects, including quantum gravity / black holes, QCD at extreme conditions, exotic condensed matter systems, and quantum information.

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Related Content

Hong Liu. 8.821 String Theory and Holographic Duality. Fall 2014. Massachusetts Institute of Technology: MIT OpenCourseWare, License: Creative Commons BY-NC-SA.

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