Classification of Cosmological Trajectories
نویسنده
چکیده
In the context of effective Friedmann equation we classify the cosmologies in multiscalar models with an arbitrary scalar potential V according to their geometric properties. It is shown that all flat cosmologies are geodesics with respect to a conformally rescaled metric on the ‘augmented’ target space. Non-flat cosmologies with V = 0 are also investigated. It is shown that geodesics in a ‘doubly-augmented’ target space yield cosmological trajectories for any curvature k when projected onto a given hypersurface.
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