PIRSA:21030031 Scientific Series Quantum Gravity

DOI10.48660/21030031

Series: Quantum Gravity

Wieland, W. (2021). Null infinity from quasi-local phase space. Perimeter Institute. https://pirsa.org/21030031

Wieland, Wolfgang. Null infinity from quasi-local phase space. Perimeter Institute, Mar. 18, 2021, https://pirsa.org/21030031 

@misc{ pirsa_PIRSA:21030031,
  doi = {10.48660/21030031},
  url = {https://pirsa.org/21030031},
  author = {Wieland, Wolfgang},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Null infinity from quasi-local phase space},
  publisher = {Perimeter Institute},
  year = {2021},
  month = {mar},
  note = {PIRSA:21030031 see, \url{https://pirsa.org}}
}

Abstract

I will consider the phase space at null-infinity from the r\rightarrow\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.

 

Resources

Next talk

Related Talks