منابع مشابه
On smoothness-asymmetric null infinities
We discuss the existence of asymptotically Euclidean initial data sets to the vacuum Einstein field equations which would give rise (modulo an existence result for the evolution equations near spatial infinity) to developments with a past and a future null infinity of different smoothness. For simplicity, the analysis is restricted to the class of conformally flat, axially symmetric initial dat...
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It is shown that some known solutions of Einstein’s vacuum field equations admit null infinities such that the sections of the null hypersurface at infinity are toroidal. PACS numbers: 0420G, 0420H, 0430
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We describe our present understanding of the relations between the behaviour of asymptotically flat Cauchy data for Einstein’s vacuum field equations near space-like infinity and the asymptotic behaviour of their evolution in time at null infinity.
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In this paper we will try to introduce a good smoothness notion for a functor. We consider properties and conditions from geometry and algebraic geometry which we expect a smooth functor should has.
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This is the written version of a talk given in memory of Gunnar Källén, at the Departments of Theoretical Physics, Physics, and Astronomy of Lund University on February 13, 2009. It will be published in a collection of the papers of Gunnar Källén, edited by C. Jarlskog and A. C. T. Wu. I discuss some of Källén’s work, especially regarding the problem of infinities in quantum field theory, and r...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2006
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/23/10/022