Prof.
Jan
Derezinski
Department of Mathematical Methods in Physics, Faculty of Physics, University of Warsaw
The short answer is: they are not.
I will give a long answer. After a definition of what I mean by "physical", I will explain the flaws of various attempts to define tachyonic quantum field theory. My talk is inspired by recent discussions at our Faculty of Physics about tachyons.
This is a hybrid event:
Room D, the Institute of Physics PAS, Al. Lotników 32/46
Online: Zoom Link, (Passcode: 134595, Meeting ID: 823 8038 0442)
