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of 55
pro vyhledávání: '"Baake, Olaf"'
Choptuik's critical phenomena in general relativity is revisited in the affine-null metric formulation of Einstein's equations for a massless scalar field in spherical symmetry. Numerical solutions are obtained by evolution of initial data using pseu
Externí odkaz:
http://arxiv.org/abs/2405.19122
This work outlines a straightforward mechanism for endorsing primary hair into Schwarzschild black holes, resulting in a unique modification within the framework of a special scalar-tensor theory, the so-called beyond Horndeski type. The derived solu
Externí odkaz:
http://arxiv.org/abs/2312.05207
Autor:
Baake, Olaf, Zanelli, Jorge
We examine the semiclassical backreaction of a conformally coupled scalar field on an overspinning BTZ geometry. This extends the work done on a similar problem for ($2+1$)- AdS geometries of the BTZ family with $|M|>|J|$. The overspinning classical
Externí odkaz:
http://arxiv.org/abs/2301.04256
Autor:
Baake, Olaf
Keramiken auf der Basis von leichten Elementen wie Bor, Silizium, Kohlenstoff, Stickstoff und Sauerstoff sind seit langem in der Industrie verwendete Werkstoffe. Besonders die Carbide und Nitride weisen für viele Anwendungen günstige mechanische, e
Autor:
Baake, Olaf, Hassaine, Mokhtar
In five dimensions we consider a general shift symmetric and parity preserving scalar tensor action that contains up to second order covariant derivatives of the scalar field. A rotating stealth black hole solution is constructed where the metric is
Externí odkaz:
http://arxiv.org/abs/2104.13834
We construct regular, asymptotically flat black holes of higher order scalar tensor (DHOST) theories, which are obtained by making use of a generalized Kerr-Schild solution generating method. The solutions depend on a mass integration constant, admit
Externí odkaz:
http://arxiv.org/abs/2104.08221
Publikováno v:
Phys. Rev. D 102, 024088 (2020)
We consider a general class of scalar tensor theories in three dimensions whose action contains up to second-order derivatives of the scalar field with coupling functions that only depend on the standard kinetic term of the scalar field, thus ensurin
Externí odkaz:
http://arxiv.org/abs/2005.10869
Akademický článek
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Autor:
Baake, Olaf, Rinne, Oliver
Publikováno v:
Phys. Rev. D 94, 124016 (2016)
We consider the Einstein-Maxwell-Klein-Gordon equations for a spherically symmetric scalar field scattering off a Reissner-Nordstr\"om black hole in asymptotically flat spacetime. The equations are solved numerically using a hyperboloidal evolution s
Externí odkaz:
http://arxiv.org/abs/1610.08352
Publikováno v:
In Journal of Materials Science & Technology February 2013 29(2):142-148
