FORM INVARIANCE SYMMETRY GENERATES A LARGE SET OF FRW COSMOLOGIES
نویسندگان
چکیده
منابع مشابه
ar X iv : 1 20 7 . 10 55 v 2 [ gr - q c ] 6 D ec 2 01 2 Form invariance symmetry generates a large set of FRW cosmologies
We show that Einstein’s field equations for spatially flat Friedmann-Robertson-Walker (FRW) space times have a form invariance symmetry (FIS) realized by the form invariance transformations (FIT) which are indeed generated by an invertible function of the source energy density. These transformations act on the Hubble expansion rate, the energy density, and pressure of the cosmic fluid; likewise...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2013
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732312502367