Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Olaf Baake"'
Autor:
Olaf Baake, Mokhtar Hassaine
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 7, Pp 1-12 (2021)
Abstract 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 m
Externí odkaz:
https://doaj.org/article/8166e35abb294988add4e6969ab49d5e
Autor:
Mokhtar Hassaine, Olaf Baake
Publikováno v:
The European Physical Journal C. 81
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c82899aef3f0629488830221fba438c9
https://doi.org/10.1140/epjc/s10052-021-09449-2
https://doi.org/10.1140/epjc/s10052-021-09449-2
Publikováno v:
Physical Review
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a939fe75337cfed99eaaa841543bebb
Publikováno v:
JCAP
JCAP, 2021, 06, pp.021. ⟨10.1088/1475-7516/2021/06/021⟩
JCAP, 2021, 06, pp.021. ⟨10.1088/1475-7516/2021/06/021⟩
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ab6165c16fc079537082406df4a837e
https://doi.org/10.1088/1475-7516/2021/06/021
https://doi.org/10.1088/1475-7516/2021/06/021
Autor:
Daniel Severin, Vincent Lima, Markus Bender, Olaf Baake, Umme Habiba Hossain, Wolfgang Ensinger
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 326:135-139
The present work is part of a research program studying the swift heavy ion induced modification of aliphatic polymers with some comparable side groups, here polymethyl-methacrylate (PMMA). This paper presents a study on Fourier-transform-infrared sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcac87c8ba9839c72cf094cf9a1a64e0
https://doi.org/10.1016/j.nimb.2013.10.074
https://doi.org/10.1016/j.nimb.2013.10.074
Autor:
Olaf Baake, Oliver Rinne
Publikováno v:
Physical Review D
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e727fa670f1b858119fefbc81dcf91f3
https://doi.org/10.1103/physrevd.94.124016
https://doi.org/10.1103/physrevd.94.124016
Publikováno v:
Journal of Materials Science & Technology. 29:142-148
1,3 Propanediol based Sol–Gel (Na 0.5 K 0.5 )NbO 3 (NKN) lead-free thin films were synthesized on Pt/Ti/SiO 2 /Si substrates. Na-acetate, K-acetate, and Nb-pentaethoxide were used as metal precursors and 1,3 propanediol as solvent. The influence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52676531f145fd2f9bd8c587a87e23f3
https://doi.org/10.1016/j.jmst.2012.11.012
https://doi.org/10.1016/j.jmst.2012.11.012
Publikováno v:
Journal of Alloys and Compounds. 548:38-45
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c47ae28ade9fed53fd55bf63cb4039
https://doi.org/10.1016/j.jallcom.2012.08.099
https://doi.org/10.1016/j.jallcom.2012.08.099
Autor:
Olaf Baake, Marina Kosinova, V. A. Trunova, Burkhard Beckhoff, Peter Hoffmann, Rainer Unterumsberger, Beatrix Pollakowski, Wolfgang Ensinger
Publikováno v:
Analytical Chemistry. 85:193-200
Improvement in the performance of functional nanoscaled devices involves novel materials, more complex structures, and advanced technological processes. The transitions to heavier elements and to thicker layers restrict access to the chemical and phy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb3df470faeb78916127316a55fce07d
https://doi.org/10.1021/ac3024872
https://doi.org/10.1021/ac3024872
Publikováno v:
Bulletin of Materials Science. 35:745-750
Thin films of (Na0·5K0·5)NbO3 (KNN) were synthesized on Pt/Ti/SiO2/Si substrates with repeated spin-coating after fabrication of the precursor solution by a sol–gel process. The KNN precursor solution was prepared from K- and Na-acetate, Nb-penta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::294d241f75e82d17e6ed8ea8e4b7aa37
https://doi.org/10.1007/s12034-012-0367-6
https://doi.org/10.1007/s12034-012-0367-6