Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Standard Model and Beyond
· Problem 3.11
Gauge Theories
Physics — Particle Physics · pion-nucleon-su2-invariance
Problem
Show that the pion-nucleon Lagrangian density in (3.84) is
S
U
(
2
)
SU(2)
S
U
(
2
)
invariant by proving that
[
T
i
,
L
0
]
=
0
\left[T^i, \mathcal{L}_0\right] = 0
[
T
i
,
L
0
]
=
0
. Use the representation matrices in (3.83).
Related theory
Nucleon Nucleon Interaction
Browse the problem library