Timeline for What is polarisation, spin, helicity, chirality and parity?
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5 events
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| Jan 7, 2022 at 8:39 | comment | added | ACuriousMind♦ | @Craig Ah, this is for the solutions of the (massless) Dirac equation in momentum space: The solution is a Dirac-spinor valued function $u(p)$, and solutions with $hu(p) = \pm\frac{1}{2}u(p)$ are precisely those that take values only in one of the chiral eigenspaces. | |
| Jan 7, 2022 at 5:18 | comment | added | Craig | Late follow up: how can the eigenspaces of Chirality and Helicity be the same in the massless case, when one operator is purely a matrix and one is a derivative? Or am I misunderstanding that momentum operator? | |
| Feb 7, 2016 at 22:10 | comment | added | ACuriousMind♦ | @asmaier: I'm not sure polarizations has a well-defined meaning that's distinct from these. E.g. the two polarization states of a photon arise from its two helicity states, and I haven't really heard polarization for anything else | |
| Feb 7, 2016 at 15:55 | comment | added | asmaier | What about polarization? | |
| Jan 29, 2016 at 22:16 | history | answered | ACuriousMind♦ | CC BY-SA 3.0 |