Classical solutions from quantum regime for barotropic FRW model. (English) Zbl 1034.83031
Summary: The quantization of gravity coupled to barotropic perfect fluid matter field with a cosmological constant is carried out. The wave function can be determined for any curvature index \(\kappa\) in the FRW minisuperspace model. The meaning of the existence of the classical solution is discussed in the WKB semiclassical approximation.
MSC:
83F05 | Relativistic cosmology |
83C20 | Classes of solutions; algebraically special solutions, metrics with symmetries for problems in general relativity and gravitational theory |
83C45 | Quantization of the gravitational field |