1 / 9

Spin – for state at rest

Spin – for state at rest. Since we have a (two-fold) degeneracy there must be some operator which commutes with the energy operator and whose eigenvalues label the two states. Spin – for state NOT at rest. Helicity. Eigenvalues.

levi
Download Presentation

Spin – for state at rest

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Spin – for state at rest Since we have a (two-fold) degeneracy there must be some operator which commutes with the energy operator and whose eigenvalues label the two states

  2. Spin – for state NOT at rest Helicity Eigenvalues (More generally, in arbitrary frame, spin given by boosting result at rest -

  3. Inclusion of electromagnetic interaction

  4. Nonrelativistic limit Dominant time dependence large component small component

  5. Gyromagnetic ratio =2 predicted

  6. Spin – for state at rest Since we have a (two-fold) degeneracy there must be some operator which commutes with the energy operator and whose eigenvalues label the two states

  7. Spin – for state NOT at rest Helicity Eigenvalues (More generally, in arbitrary frame, spin given by boosting result at rest -

  8. Zero mass fermions – the two component neutrino Weyl basis For m=0 …no mixing Both have +ve and –ve energy solution Negative helicity neutrino - LH Positive helicity antineutrino - RH Projects LH neutrino

  9. Parity Parity invariant (neutrinos violate parity)

More Related