6533b821fe1ef96bd127b00b
RESEARCH PRODUCT
Adiabatic regularization and particle creation for spin one-half fields
Francisco TorrentiJosé Navarro-salasAitor Landetesubject
High Energy Physics - TheoryPhysicsNuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Quantum field theory in curved spacetimeFOS: Physical sciencesFísicaGeneral Relativity and Quantum Cosmology (gr-qc)Mathematical Physics (math-ph)Adiabatic quantum computationGeneral Relativity and Quantum CosmologyWKB approximationRenormalizationsymbols.namesakeGeneral Relativity and Quantum CosmologyClassical mechanicsHigh Energy Physics - Theory (hep-th)Dirac fermionRegularization (physics)symbolsAdiabatic processMathematical PhysicsAstrophysics - Cosmology and Nongalactic AstrophysicsMathematical physicsAnsatzdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-11-20 |