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- W4280595890 abstract "In this paper, we consider the Hilbert–Einstein–Dirac functional, whose critical points are pairs, metrics-spinors, that satisfy a system coupling the Riemannian and the spinorial part. Under some assumptions, on the sign of the scalar curvature and the diameter, we prove a compactness result for this class of pairs, in dimension three and four. This can be seen as the equivalent of the study of compactness of sequences of Einstein manifolds as in references (Anderson in J Am Math Soc 2:455–490, 1989; Nakajima in J Fac Sci Univ Tokyo Sect IA Math 35:411–424, 1988). Indeed, we study the compactness of sequences of critical points of the Hilbert–Einstein–Dirac functional which is an extension of the Hilbert–Einstein functional having Einstein manifolds as critical points. Moreover we will study the second variation of the energy, characterizing the horizontal deformations for which the second variation vanishes. Finally we will exhibit some explicit examples." @default.
- W4280595890 created "2022-05-22" @default.
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- W4280595890 date "2022-05-17" @default.
- W4280595890 modified "2023-10-18" @default.
- W4280595890 title "Compactness of Dirac–Einstein Spin Manifolds and Horizontal Deformations" @default.
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- W4280595890 doi "https://doi.org/10.1007/s12220-022-00941-z" @default.
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