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pro vyhledávání: '"Marcus Kriele"'
Autor:
Luc Vrancken, Marcus Kriele
Publikováno v:
Archiv der Mathematik. 72:223-232
We study Lagrangian immersions \(M^n_1\) into Lorentzian complex indefinite space forms \(\tilde M^n_1(4 \tilde c), \tilde c \ne 0\) and classify all such immersions which are minimal and have constant curvature \(c \ne \tilde c\).
Autor:
Marcus Kriele, Marek Kossowski
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences. 446:115-126
We give a local existence and uniqueness theorem for solutions of Einstein’s equations with dust energy momentum tensor in the class of m -dimensional, analytic, transverse, signature type changing spacetimes where the initial conditions are give
Autor:
Marcus Kriele
Publikováno v:
Classical and Quantum Gravity. 11:1325-1330
Signature (type) changing spacetimes are the classical limit of a variant of the no-boundary proposal of Hartle and Hawking (1983). I study spacetimes where the Einstein equation is coupled to a scalar field and give a heuristic, semiclassical argume
Autor:
Marek Kossowski, Marcus Kriele
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences. 444:297-306
We study the geodesics and pre-geodesics of a smooth manifold with smooth pseudo riemannian metric which changes bilinear type (i. e. the signature changes) on a hypersurface. We classify all geodesics and pre-geodesics that cross the hypersurface of
Autor:
Marcus Kriele, Jerome Martin
There exists a widespread belief that signature type change could be used to avoid spacetime singularities. We show that signature change cannot be utilised to this end unless the Einstein equation is abandoned at the suface of signature type change.
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a8915002d3759ec31336654c92e6640