13.07.2015 Views

INSTITUTO POLITÉCNICO NACIONAL - Instituto Avanzado de ...

INSTITUTO POLITÉCNICO NACIONAL - Instituto Avanzado de ...

INSTITUTO POLITÉCNICO NACIONAL - Instituto Avanzado de ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

4.1. ACCIÓN EFECTIVA PARA EMDA 78Si se introduce el pseudoescalar, que generaliza el campo axiónico <strong>de</strong> Pecci-Quinn, representado por q; comoH = 1 2 E p 1 q; p 1 ; (4.6)que satisfacerJ p J p J q + p ~ F F t = 0; (4.7)don<strong>de</strong> hemos <strong>de</strong>…nidoJ q = (rq)p 1 ; (4.8)a<strong>de</strong>más <strong>de</strong> haber introducido~F = 1 2 E F ; (4.9)don<strong>de</strong> E = " sign(g)= pg, es el pseudo-tensor <strong>de</strong> Levi-Civita.Con lo cual, las ecuaciones <strong>de</strong> Euler-Lagrange (4.3), (4.4) y (4.5) pue<strong>de</strong> escribirsecomor (pF + q ~ F ) = 0; (4.10)rJ p + (J q ) 2 + pF F t = 0; (4.11) 1R = tr2 (J J p p + JJ q q )2p[F F t 14 g F F t ] : (4.12)

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!