"Gravity as the square of Yang-Mills," by Alexandros Anastasiou (Imperial College London)

Date: 
Tuesday, October 6, 2015 - 4:00pm to 5:00pm
Series: 
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Tuesday, October 6, 2015
4-5PM

Guest Speaker: Alexandros Anastasiou (Imperial College London)

Talk Title: "Gravity as the square of Yang-Mills"

Abstract:

A recurring theme in the attempts of understanding the quantum theory of gravity is the idea of “Gravity as the square of Yang-Mills”. This involves the tensoring of the multiplet content of two super-Yang-Mills theories to obtain the multiplet content of a supergravity theory. A complete understanding of this correspondence requires studying how both global and local symmetries originate from the corresponding Yang-Mills factors. In the first part of the talk I will show how we can construct the global (U-duality) supergravity symmetries out of the corresponding global Yang-Mills ones (R-symmetries) in all spacetime dimensions between 3 and 10. In the second part I will demonstrate how the local symmetries of the gravity theory (in linearised approximation) can also be derived from local gauge invariance of the Yang-Mills factors. This will be done through a specific example in 4 spacetime dimensions.

Location: 
PAB 4-330