Geodesic evolution and nucleation of a de Sitter brane

Aharon Davidson, David Karasik, Yoav Lederer
2005 Physical Review D  
Within the framework of Geodesic Brane Gravity, the deviation from General Relativity is parameterized by the conserved bulk energy. The corresponding geodesic evolution/nucleation of a de-Sitter brane is shown to be exclusively driven by a double-well Higgs potential, rather than by a plain cosmological constant. The (hairy) horizon serves then as the locus of unbroken Z_2 symmetry. The quartic structure of the scalar potential, singled out on finiteness grounds of the total (including the
more » ... component) energy density, chooses the Hartle-Hawking no-boundary proposal.
doi:10.1103/physrevd.72.064011 fatcat:hrvl4zskzzezffmynhx3iiwxru