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Entree


Interacting fermions in an expanding spacetime

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Autor(es):
Machado, L. N. ; Costa, H. A. S. ; da Paz, I. G. ; Sampaio, Marcos ; Araujo, Jonas B.
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW D; v. 98, n. 12, p. 12-pg., 2018-12-17.
Resumo

We evaluate the effect of quantum electrodynamics on the correlations between Dirac field modes corresponding electron-positron pairs of opposite momenta generated by expansion of an asymptotically flat Friedmann-Robertson-Walker (FRW) universe. The mutual information of out-going electron-positron pairs is evaluated to leading order in the coupling strength and compared with the free case. It is shown a decrease in the mutual information between the electron and positron. In addition, it is found that the change in the electron-positron mutual information depends on how the momentum is distributed between the positron and photon modes. (AU)

Processo FAPESP: 18/05948-6 - Aspectos perturbativos e não perturbativos em teoria quântica de campos e informação quântica relativística
Beneficiário:Marcos Donizeti Rodrigues Sampaio
Modalidade de apoio: Bolsas no Exterior - Pesquisa