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New energy inequalities for tensorial wave equations on spacetimes that satisfy a one-sided bound. (English) Zbl 1256.35166

Summary: We consider several tensorial wave equations, specifically the equations of Maxwell, Yang-Mills, and Weyl fields, posed on a curved spacetime, and we establish new energy inequalities under certain one-sided geometric conditions. Our conditions restrict the lapse function and deformation tensor of the spacetime foliation, and turn out to be a one-sided and integral generalization of conditions recently proposed by S. Klainerman and I. Rodnianski [J. Am. Math. Soc. 23, No. 2, 345–382 (2010; Zbl 1203.35084)] as providing a continuation criterion for Einstein’s field equations of general relativity. As we observe it here for the first time, one-sided conditions are sufficient to derive energy inequalities for certain tensorial equations, provided one takes advantage of some algebraic properties enjoyed by the natural energy functionals associated with the equations under consideration. Our method especially applies to the Bel-Robinson energy for Weyl fields, and our inequalities control the growth of the energy in a uniform way, with implied constants depending on the one-sided geometric bounds, only.

MSC:

35Q76 Einstein equations
83C05 Einstein’s equations (general structure, canonical formalism, Cauchy problems)
35L72 Second-order quasilinear hyperbolic equations
83C40 Gravitational energy and conservation laws; groups of motions

Citations:

Zbl 1203.35084
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References:

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