Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Govaerts, Jan"'
Autor:
Govaerts, Jan
Publikováno v:
International Journal of Theoretical Physics (2024) 63:207(21 pages)
The standard proposal within the context of General relativity and its weak field Newtonian limit for the nature of dark matter is that it consists of dark matter particles of unknown type. In the present work and specifically for spiral galaxy rotat
Externí odkaz:
http://arxiv.org/abs/2408.09977
Autor:
Govaerts, Jan
Publikováno v:
Mathematics 12(2) (2024) 180 (45 pages)
As is well known, an external magnetic field in configuration space coupled to a quantum dynamics induces noncommutativity in its velocity momentum space. By phase space duality, an external vector potential in the conjugate momentum sector of the sy
Externí odkaz:
http://arxiv.org/abs/2401.03902
Autor:
Govaerts, Jan
Publikováno v:
Reviews in Mathematical Physics 35 (2023) 2350014 (53 pages)
Even though its classical equations of motion are then left invariant, when an action is redefined by an additive total derivative or divergence term (in time, in the case of a mechanical system) such a transformation induces nontrivial consequences
Externí odkaz:
http://arxiv.org/abs/2304.13122
Autor:
Govaerts, Jan
In view of the observed flat rotation curves of spiral galaxies and motivated by the simple fact that within newtonian gravity a stationary axisymmetric mass distribution or dark matter vortex of finite extent readily displays a somewhat flattened ou
Externí odkaz:
http://arxiv.org/abs/2303.01386
Autor:
Govaerts, Jan
Publikováno v:
Eur. Phys. J C (2023) 83: 158 (17 pages)
It has long been known that in the absence of electric charges and currents, Maxwell's electromagnetism in 4 dimensional vacuum Minkowski space-time is invariant under SO(2) dual transformations that mix its electric and magnetic fields. Extending th
Externí odkaz:
http://arxiv.org/abs/2302.03526
Autor:
Iyela, Daddy Balondo, Govaerts, Jan
When discussing consequences of symmetries of dynamical systems based on Noether's first theorem, most standard textbooks on classical or quantum mechanics present a conclusion stating that a global continuous Lie symmetry implies the existence of a
Externí odkaz:
http://arxiv.org/abs/2107.03831
Autor:
Dassy, Clémentine, Govaerts, Jan
Source-free so-called ModMax theories of nonlinear electrodynamics in the four dimensional Minkowski spacetime vacuum are the only possible continuous deformations -- and as a function of a single real and positive parameter -- of source-free Maxwell
Externí odkaz:
http://arxiv.org/abs/2105.05802
Autor:
Govaerts, Jan
Publikováno v:
J. Phys. Conf. Ser. 1208 (2019) 012011
There exist instances of dynamical systems possessing symmetry transformations of which the conserved Noether charges generating these symmetries feature an explicit time dependence in their functional representation over phase space. The generators
Externí odkaz:
http://arxiv.org/abs/1907.00154
Autor:
Iyela, Daddy Balondo, Govaerts, Jan
BMS symmetries have been attracting a great deal of interest in recent years. Originally discovered as being the symmetries of asymptotically flat spacetime geometries at null infinity in General Relativity, BMS symmetries have also been shown to exi
Externí odkaz:
http://arxiv.org/abs/1906.07026
Autor:
Bertrand, Bruno, Govaerts, Jan
Following a novel approach, all known basic mass generation mechanisms consistent with an exact abelian U(1) gauge symmetry are shown to be related through an intricate network of dualities whatever the spacetime dimension. This equivalence which app
Externí odkaz:
http://arxiv.org/abs/1807.07763