- #1
parton
- 83
- 1
Hello!
I've some problems understanding why in field theory a term (appearing in a Lagrangian) like [tex]\propto \phi^{2}[/tex] is called "mass"-term (whereas [tex]\phi[/tex] denotes a real field). Is there any interpretation? And is this a general expression for a mass term or could it be of any other shape?
Thanks
I've some problems understanding why in field theory a term (appearing in a Lagrangian) like [tex]\propto \phi^{2}[/tex] is called "mass"-term (whereas [tex]\phi[/tex] denotes a real field). Is there any interpretation? And is this a general expression for a mass term or could it be of any other shape?
Thanks