Schedule Mar 04, 2021
Null infinity from quasi-local phase space
Wolfgang Wieland
Cite as: doi:10.26081/K6M31V

I will consider the phase space at null-infinity from the r -> infty limit of a quasi-local phase space for a finite box with a boundary that is null. This box will serve as a natural IR regulator. To remove the IR regulator, I will consider a double null foliation together with an adapted Newman--Penrose null tetrad. The limit to null infinity (on phase space) is obtained in the limit where the boundary is sent to infinity. I will introduce various charges and explain the role of the corresponding balance laws. The talk is based on the paper: arXiv:2012.01889.

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