题目内容
（请给出正确答案）
For the global SU(2) symmetry, one transforms the nucleons in isospin space with the known generator
In isospin space the proton can be written as
please evaluate
and see what will amaze you by such a transformation which is actually the rotation in isospin space.
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更多“For the global SU（2) symmetry,…”相关的问题
The Lagrangian for the system is given by
To keep it invariant under the local gauge transformation
Please prove the transformation of gauge field satisfies the following formula:
Knowing
please prove the lowest-energy state
(2) by redefining the field upon the vacuum
The Gellmann-Okubo mass formula for baryons is given as
please determine the coefficients
using the baryon masses for nucleons (938 MeV), and hyperons
whose isospins are
respectively. (10 points). Then please evaluate the mass of
using above mass formula and compare it with that in the courseware. (4 points)
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