Non-uniqueness in conformal formulations of the Einstein constraints
arXiv:gr-qc/0610129 · doi:10.1088/0264-9381/24/8/002
Abstract
Standard methods in non-linear analysis are used to show that there exists a parabolic branching of solutions of the Lichnerowicz-York equation with an unscaled source. We also apply these methods to the extended conformal thin sandwich formulation and show that if the linearised system develops a kernel solution for sufficiently large initial data then we obtain parabolic solution curves for the conformal factor, lapse and shift identical to those found numerically by Pfeiffer and York. The implications of these results for constrained evolutions are discussed.
Arguments clarified and typos corrected. Matches published version
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