Cosmological models with spinor and scalar fields by Noether symmetry approach

Gilberto M. Kremer; Rudinei C. de Souza

Cosmological models with spinor and scalar fields by Noether symmetry approach

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arxiv 1301.5163 v2 pith:66J53NTB submitted 2013-01-22 gr-qc

Gilberto M. Kremer , Rudinei C. de Souza This is my paper · ORCID

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keywords cosmologicalnoetherapproachfieldsmodelsscalarspinorsymmetry

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General cosmological models with spinor and scalar fields playing the role of gravitational sources are analyzed. The Noether symmetry approach is taken as a criterion to constrain the undefined potentials and couplings of the generic actions. For all the found Noether symmetries the corresponding dynamical systems can be analytically integrated. The obtained cosmological solutions describe the early and late Universe as expected by basing on the known eras of the Universe.

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Non-minimally coupled nonlinear spinor field in FRW cosmology
gr-qc 2019-08 conditional novelty 4.0 of 10

In FRW cosmology, non-minimal spinor-gravity coupling strongly accelerates expansion for matter-like spinor fields, but has little effect for dark-energy-like nonlinearities.

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