Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymptotic symmetries and charges at spatial infinity in general
  relativity   We analyze the asymptotic symmetries and their associated charges at spatial
infinity in $4$-dimensional asymptotically-flat spacetimes. We use the
covariant formalism of Ashtekar and Hansen where the asymptotic fields and
symmetries live on the $3$-manifold of spatial directions at spatial infinity,
represented by a timelike unit-hyperboloid (or de Sitter space). Using the
covariant phase space formalism, we derive formulae for the charges
corresponding to asymptotic supertranslations and Lorentz symmetries at spatial
infinity. With the motivation of, eventually, proving that these charges match
with those defined on null infinity -- as has been conjectured by Strominger --
we do not impose any restrictions on the choice of conformal factor in contrast
to previous work on this problem. Since we work with a general conformal factor
we expect that our charge expressions will be more suitable to prove the
matching of the Lorentz charges at spatial infinity to those defined on null
infinity, as has been recently shown for the supertranslation charges.

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The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th