Abstract
AbstractWe prove a strong localized gluing result for the general relativistic constraint equations (with or without cosmological constant) in $$n\ge 3$$
n
≥
3
spatial dimensions. We glue an $$\epsilon $$
ϵ
-rescaling of an asymptotically flat data set $$({\hat{\gamma }},{\hat{k}})$$
(
γ
^
,
k
^
)
into the neighborhood of a point $$\mathfrak {p}\in X$$
p
∈
X
inside of another initial data set $$(X,\gamma ,k)$$
(
X
,
γ
,
k
)
, under a local genericity condition (non-existence of KIDs) near $$\mathfrak {p}$$
p
. As the scaling parameter $$\epsilon $$
ϵ
tends to 0, the rescalings $$\frac{x}{\epsilon }$$
x
ϵ
of normal coordinates x on X around $$\mathfrak {p}$$
p
become asymptotically flat coordinates on the asymptotically flat data set; outside of any neighborhood of $$\mathfrak {p}$$
p
on the other hand, the glued initial data converge back to $$(\gamma ,k)$$
(
γ
,
k
)
. The initial data we construct enjoy polyhomogeneous regularity jointly in $$\epsilon $$
ϵ
and the (rescaled) spatial coordinates. Applying our construction to unit mass black hole data sets $$(X,\gamma ,k)$$
(
X
,
γ
,
k
)
and appropriate boosted Kerr initial data sets $$({\hat{\gamma }},{\hat{k}})$$
(
γ
^
,
k
^
)
produces initial data which conjecturally evolve into the extreme mass ratio inspiral of a unit mass and a mass $$\epsilon $$
ϵ
black hole. The proof combines a variant of the gluing method introduced by Corvino and Schoen with geometric singular analysis techniques originating in Melrose’s work. On a technical level, we present a fully geometric microlocal treatment of the solvability theory for the linearized constraints map.
Funder
Swiss Federal Institute of Technology Zurich
Publisher
Springer Science and Business Media LLC
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