Seminarium Teorii Względności i Grawitacji
sala 1.40, ul. Pasteura 5
2023-03-10 (11:15) 
Jerzy Kijowski (CFT)
On the dangers and ambushes awaiting a theoretical physicist as soon as he starts to apply variational principles
Deriving field equations from a variational principle has now become standard in theoretical physics. However, the very derivation of the Euler-Lagrange equations often relies on outdated prejudices and inevitably leads to paradoxes. I will try to put some order in this area.