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[2001.00394] Viable Gauge Choices in Cosmologies with Non-Linear Structures

Posted: March 02 2020
by Shaun Hotchkiss
I've decided to start making some technical cosmology videos. The format will be me interviewing authors of papers I found interesting. The first is on this paper and is now online here. The idea is for this to fill the same niche as a departmental seminar or plenary conference talk, so it is technical, but not meant to be only for those already working on the specific topic. Hopefully it will be of some (potential) benefit to all people at the level of a Cosmology PhD student or above, whatever their own research is on.

I found the paper interesting because it had useful things to say about what we can and can't do when making relativistic predictions from Newtonian simulations, although this isn't how the authors framed the paper themselves. This is something fraught with difficulty and some of the claims made are quite strong, so I wanted to hear more.

I found that Kit (Chris) Gallagher, the interviewee, explained the topic really well. I definitely understand the paper better now than I did from just reading it.

The video is unfortunately quite long (80 minutes). I either need to accept this length in the future or try harder to cut the time down during interviews. If there is enough interest I will probably add tables of contents to videos so that people can skip ahead to bits they'll find interesting.

Feedback is definitely welcomed! As are requests to be interviewed and requests for videos on specific papers.