Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Jan-Willem van Holten"'
Autor:
Jan-Willem van Holten
Publikováno v:
Universe, Vol 10, Iss 5, p 197 (2024)
This paper reviews the dynamics of a single isotropic and homogeneous scalar field φ(t) in the context of cosmological models. A non-standard approach to the solution of the Einstein–Klein–Gordon equations is described which uses the scalar fiel
Externí odkaz:
https://doaj.org/article/556b163c7e1a40c1bfad03c30727dadf
Autor:
Jan-Willem van Holten
Publikováno v:
Universe, Vol 6, Iss 9, p 144 (2020)
This paper addresses the fate of extended space-time symmetries, in particular conformal symmetry and supersymmetry, in two-dimensional Rindler space-time appropriate to a uniformly accelerated non-inertial frame in flat 1+1-dimensional space-time. G
Externí odkaz:
https://doaj.org/article/937002e6f9aa44ffbacc0e8ae2e38dbe
Autor:
Jan Willem Van Holten
Publikováno v:
Universe
Volume 9
Issue 2
Pages: 110
Volume 9
Issue 2
Pages: 110
The equations of General Relativity are recast in the form of a wave equation for the Weyl tensor. This allows to reformulate gravitational wave theory in terms of curvature waves, rather than metric waves. The existence of two transverse polarizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a34eddea1fb87b57b3ae320848c1d55
De'Institutions Physiques'van Mw. De Markiezin van Chastellet, hier vertaald als Grondslagen van de fysica, werd gepubliceerd in 1742, als uitgebreide en verbeterde uitgave van een eerdere editie uit 1740. Daarin geeft zij een uitvoerig en deskundig
Autor:
Jan-Willem van Holten
Publikováno v:
Fundamental Theories of Physics ISBN: 9783030114992
The motion of a compact body in space and time is commonly described by the world line of a point representing the instantaneous position of the body. In General Relativity such a world-line formalism is not quite straightforward because of the stric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::659b3aa74d3b0c2404bd44572c6c0e42
https://doi.org/10.1007/978-3-030-11500-5_12
https://doi.org/10.1007/978-3-030-11500-5_12
Autor:
Richard Kerner, Jan-Willem van Holten
We start with a short introduction of the role that constraints and Lagrange multiplers play in variational calculus. After recalling briefly the properties of the nonlinear sigma model, we show how the Hamilton–Jacobi method can be applied to find
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0ece0d8d884b4e158a5ca82c02081a7
http://hdl.handle.net/1887/3199359
http://hdl.handle.net/1887/3199359
Autor:
Jan Willem van Holten
Publikováno v:
Universe, Vol 4, Iss 10, p 110 (2018)
Light waves carry along their own gravitational field; for simple plain electromagnetic waves the gravitational field takes the form of a pp-wave. I present the corresponding exact solution of the Einstein-Maxwell equations and discuss the dynamics o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0256d215db87da03650f3e348790b582
https://doi.org/10.3390/universe4100110
https://doi.org/10.3390/universe4100110
Autor:
Jan-Willem van Holten
Publikováno v:
Journal of physics: Conference series, 597, 012072
Journal of physics: Conference series
Journal of physics: Conference series
In classical and quantum mechanical systems on manifolds with gauge-field fluxes, constants of motion are constructed from gauge-covariant extensions of Killing vectors and tensors. This construction can be carried out using a manifestly covariant pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a81d40780a8231c19de6b5d6005beb11
http://arxiv.org/abs/1408.0115
http://arxiv.org/abs/1408.0115
Publikováno v:
Classical and Quantum Gravity, 16, 2537-2544. IOP Publishing Ltd.
On manifolds with non-trivial Killing tensors admitting a square root of the Killing-Yano type one can construct non-standard Dirac operators which differ from, but commute with, the standard Dirac operator. We relate the index problem for the non-st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0badb16cf80e06e01ab72a786f64563
https://doi.org/10.1088/0264-9381/16/7/325
https://doi.org/10.1088/0264-9381/16/7/325
We consider the generalized particle dynamics, proposed by us, in brane world formalisms for an asymptotically anti de Sitter background. The present framework results in a new model that accounts for the late acceleration of the universe. An effecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e943dc574c40f797fc8d1e7957f53976
http://arxiv.org/abs/0906.1044
http://arxiv.org/abs/0906.1044