Timeline for $\rm SU(2)$ isospin invariance of the nucleon-pion system in infinitesimal transformation for Noether current calculation
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Mar 29, 2021 at 11:18 | comment | added | Davide Morgante | @fec In this context $\alpha k$ has no specific meaning while $\alpha^k$ is the k-th component of the $\alpha$ vector. The two factors you wrote are identical, it's not important where the $\mu$ index is as long as they are contracted. | |
| Mar 29, 2021 at 8:32 | comment | added | cmmigl | I got the symmetric and anti-symmetric part, how do I get $\epsilon^{ijk}(\partial_\mu\pi^i)\pi^j\partial^\mu\alpha^k(x)$ from $\epsilon^{ijk}(\partial^\mu\pi^i)\pi^j\partial_\mu\alpha^k(x)$. Also what does it means to write $\alpha k$ instead of $\alpha^k(x)$ | |
| Mar 29, 2021 at 8:00 | history | answered | Davide Morgante | CC BY-SA 4.0 |