Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
Exact solutions to the Einstein Dirac Klein-Gordon equations are found in Bianchi type-I and type-V spacetimes. When the spinor field is massive, the Bianchi type-I universe has singularities of the Zel dovich type, and it may begin anisotropically at a singularity, leading to a dust-filled Friedman...
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1990
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v42_n4_p1098_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v42_n4_p1098_Chimento |
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| Sumario: | Exact solutions to the Einstein Dirac Klein-Gordon equations are found in Bianchi type-I and type-V spacetimes. When the spinor field is massive, the Bianchi type-I universe has singularities of the Zel dovich type, and it may begin anisotropically at a singularity, leading to a dust-filled Friedmann stage at late times. For ghost neutrinos we get an axisymmetric Zel dovich universe. These solutions have particle horizons. For the Bianchi type-V model there exist solutions which begin at a singularity, tending to flat spacetime at late times. In this case the neutrinos are not ghost ones. © 1990 The American Physical Society. |
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