Zobrazeno 1 - 10
of 240
pro vyhledávání: '"van Holten, J."'
Autor:
van Holten, J. W.
This paper reviews the dynamics of an isotropic and homogeneous cosmological scalar field. A general approach to the solution of the Einstein-Klein-Gordon equations is developed, which does not require slow-roll or other approximations. General concl
Externí odkaz:
http://arxiv.org/abs/2305.17413
Autor:
van Holten, J. W.
Publikováno v:
Universe 2020, 6, 144
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:
http://arxiv.org/abs/2007.09358
Autor:
van Dam, K., van Eijk, B., Fokkema, D. B. R. A., van Holten, J. W., de Laat, A. P. L. S., Schultheiss, N. G., Steijger, J. J. M., Verkooijen, J. C.
The High School Project on Astrophysics Research with Cosmics (HiSPARC) is a large extensive air shower (EAS) array with detection stations throughout the Netherlands, United Kingdom, Denmark and Namibia. HiSPARC is a collaboration of universities, s
Externí odkaz:
http://arxiv.org/abs/1908.01622
Autor:
van Holten, J. W.
Publikováno v:
Fortschritte der Physik (2019) 1800083
I review the elementary theory of gravitational waves on a Minkowski background and the quadrupole approximation. The modified conservation laws for energy and momentum keeping track of the gravitational-wave flux are presented. The theory is applied
Externí odkaz:
http://arxiv.org/abs/1809.05670
Autor:
de Beer, T., van Holten, J. W.
Unification of dark matter and dark energy as short- and long-range manifestations of a single cosmological substance is possible in models described by the generalized Chaplygin gas equation of state. We show it admits halo-like structures and discu
Externí odkaz:
http://arxiv.org/abs/1712.02129
Autor:
van Holten, J. W.
Publikováno v:
Physics of Atomic Nuclei 81 (2018) 858
Using a D = 1 supergravity framework I construct a super-Friedmann equation for an isotropic and homogenous universe including dynamical scalar fields. In the context of quantum theory this becomes an equation for a wave-function of the universe of s
Externí odkaz:
http://arxiv.org/abs/1707.08791
Publikováno v:
Fortsch.Phys. 65 (2017) no.5, 1700012
The aim of these notes is to give an accessible and self-contained introduction to the theory of gravitational waves as the theory of a relativistic symmetric tensor field in a Minkowski background spacetime. This is the approach of a particle physic
Externí odkaz:
http://arxiv.org/abs/1701.07794
Autor:
van Holten, J. W.
According to General Relativity gravity is the result of the interaction between matter and space-time geometry. In this interaction space-time geometry itself is dynamical: it can store and transport energy and momentum in the form of gravitational
Externí odkaz:
http://arxiv.org/abs/1611.01289
Publikováno v:
Phys. Rev. D 93, 044051 (2016)
We study the motion of neutral and charged spinning bodies in curved space-time in the test-particle limit. We construct equations of motion using a closed covariant Poisson-Dirac bracket formulation which allows for different choices of the hamilton
Externí odkaz:
http://arxiv.org/abs/1511.05454
Autor:
van Holten, J. W.
In this lecture I review the most relevant modifications of the Standard Model of particle physics that result from inclusion of right-handed neutrinos and a new neutral gauge boson Z'.
Comment: Nikhef lecture (May 2015); 20 pages, 4 figures
Comment: Nikhef lecture (May 2015); 20 pages, 4 figures
Externí odkaz:
http://arxiv.org/abs/1506.03240