Spatially-Hyperbolic Friedmann-Robertson-Walker Universe with Potentially Broken Z (2)-Symmetry

摘要

For the Friedmann-Robertson-Walker (FRW) Universe with negative curvature, sustained by a spontaneous Z (2)- symmetry breaking scalar field, depending on time alone, we have derived the Einstein-Gordon system of equations. For physically relevant cases, the matter-curvature system have been numerically analyzed.