- #1
Neitrino
- 137
- 0
Hi...
Would you please advise me what does gauge fixing term do (physical point of view) ?
Does it eliminate unnecessary spin components from lagrangian for example:
Vector particle has two (massless case) or three (massive case) degrees of freedom.
Vector itself has four, and a vector (four component object) can handle spin-0 and spin 1 mode so adding a gauge fixing term does it project out spin-0 component ?
Or absence of spin-0 part is due to specific choice of kinetic term (F_mu_nu)...
Similarly in gravity... summetric tensor has 10 independent components and it can handle spin-0 spin-1 spin-2 modes... so does employment of harmonic gauge eliminate unnecessary modes or what role has it in this business?
Thanks
Would you please advise me what does gauge fixing term do (physical point of view) ?
Does it eliminate unnecessary spin components from lagrangian for example:
Vector particle has two (massless case) or three (massive case) degrees of freedom.
Vector itself has four, and a vector (four component object) can handle spin-0 and spin 1 mode so adding a gauge fixing term does it project out spin-0 component ?
Or absence of spin-0 part is due to specific choice of kinetic term (F_mu_nu)...
Similarly in gravity... summetric tensor has 10 independent components and it can handle spin-0 spin-1 spin-2 modes... so does employment of harmonic gauge eliminate unnecessary modes or what role has it in this business?
Thanks