Radiative isotropic cosmologies with extra dimensions

Details Radiative isotropic cosmologies with extra dimensions Radiative isotropic cosmologies with extra dimensions

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34.1202i&link_type=abstract

Physical Review D (Particles and Fields), Volume 34, Issue 4, 15 August 1986, pp.1202-1204

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Exact Solutions, Field Theories In Dimensions Other Than Four

Scientific paper

We solve Einstein's equations in an n-dimensional vacuum with the simplest ansatz leading to a Friedmann-Robertson-Walker (FRW) four-dimensional space time. We show that the FRW model must be of radiation. For the open models the extra dimensions contract as a result of cosmological evolution. For flat and closed models they contract only when there is one extra dimension.

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