VIA lecture by Valerio Faraoni "Common misconceptions about LIGO detectors of gravitational waves" was given on 29.04.2016. It's presentation is attached and the record is in VIA library
http://viavca.in2p3.fr/valerio_faraoni.html
The following question was put in discussion.
Houri Ziaeepour: Is there a gauge independent formulation of your demonstration?
You are welcome to continue discussion in replies to to this post