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Feb
25 |
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awarded | Editor |
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Feb
25 |
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revised |
Derivation of Dirac equation in curved spacetime by varying the action Clarified mistake in question, added computations to reach solution based on accepted answer and comments |
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Feb
25 |
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awarded | Scholar |
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Feb
25 |
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accepted | Derivation of Dirac equation in curved spacetime by varying the action |
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Feb
22 |
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comment |
Derivation of Dirac equation in curved spacetime by varying the action You are correct, there's a missing minus sign from integrating by parts. Could you give some sources for the $\nabla_\mu \gamma^\nu = 0$ relation or explain a bit how it means that gamma matrices can pass through covariant derivatives? |
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Feb
22 |
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asked | Derivation of Dirac equation in curved spacetime by varying the action |
| 2023 | |||
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Nov
27 |
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awarded | Supporter |
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Aug
7 |
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asked | Is Walter Greiner's Nuclear Models a good and still relevant book? |
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Jul
14 |
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comment |
Goldstone bosons in 2 and 3 quark flavor symmetries I see, I think this clears up things a little. Thank you! |
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Jul
14 |
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comment |
Goldstone bosons in 2 and 3 quark flavor symmetries @CosmasZachos Thank you for the comments. I think my confusion stems from the fact that, while in SU(3) theory we point to the eta prime and say that it is a "would-be" Goldstone boson, as it is a pseudoscalar meson. There is no such analogue in SU(2) flavor symmetry as far as I can see. There is no pseudoscalar "would-be" goldstone meson composed out of u and d quarks. Why is that? |
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Jul
14 |
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awarded | Student |
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Jul
13 |
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asked | Goldstone bosons in 2 and 3 quark flavor symmetries |
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Jul
11 |
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awarded | Informed |