Effective lagrangian for a mass dimension one fermionic field in curved spacetime
Abstract
In this work we use momentum-space techniques to evaluate the propagator G( x, x ') for a spin 1 /2 mass dimension one spinor field on a curved Friedmann-Robertson-Walker spacetime. As a consequence, we built the one-loop correction to the effective lagrangian in the coincidence limit. Going further we compute the effective lagrangian in the finite temperature regime. We arrive at interesting cosmological consequences, as time-dependent cosmological `constant', fully explaining the functional form of previous cosmological models.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- February 2018
- DOI:
- 10.1007/JHEP02(2018)145
- arXiv:
- arXiv:1709.08707
- Bibcode:
- 2018JHEP...02..145B
- Keywords:
-
- Effective Field Theories;
- Cosmology of Theories beyond the SM;
- Thermal Field Theory;
- High Energy Physics - Theory
- E-Print:
- 9 pages, 0 figures