PT Journal
AU Landete, A
   Navarro-Salas, J
   Torrenti, F
TI Adiabatic regularization and particle creation for spin one-half fields
SO Physical Review D
JI Phys. Rev. D
PY 2014
BP 044030
EP 13pp
VL 89
IS 4
DI 10.1103/PhysRevD.89.044030
LA English
AB The extension of the adiabatic regularization method to spin-1/2 fields requires a self-consistent adiabatic expansion of the field modes. We provide here the details of such expansion, which differs from the WKB ansatz that works well for scalars, to firmly establish the generalization of the adiabatic renormalization scheme to spin-1/2 fields. We focus on the computation of particle production in de Sitter spacetime and obtain an analytic expression of the renormalized stress-energy tensor for Dirac fermions.
ER