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Cosmological string models from Milne spaces and SL(2,Z) orbifold
The $n+1$-dimensional Milne Universe with extra free directions is used to construct simple FRW cosmological string models in four dimensions, describing expansion in the presence of matter with $p=k \rho $, $k=(4-n)/3n$. We then consider the n=2 case and make SL(2,Z) orbifold identifications. The m...
Autor principal: | Russo, J G |
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Lenguaje: | eng |
Publicado: |
2003
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1142/S0217732304013209 http://cds.cern.ch/record/615324 |
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