Aspects of our research
The main subjects .
Do we live in a 4D spacetime?
- Many physicists conjecture that fundamental properties of our world cannot be explained without extra dimension(s)
- The “schadow” of the extra dimension manisfests itself by topological changes.
- An example is the holographic principle
The new topology
- Black holes are the most mysterious objects in our universe. There is evidence that primordial black holes could be formed in the early stages of the universe. This area will be close to the Planck scale, where quantum effects will take place.
- The quantum gravitational treatment of the black hole can be reformulated by the antipodal boundary condition
Quantum-gravity
Quantum mechanics (QM) and general relativity(GRT) describe exceedingly accurate the small-scale physics, i.e. the sub-atomic elementary paricles and the large-scale world. The latter was Einstein’s great achievement. His GRT has been tested extremely accurately in many experiments and observations. QM has perhaps been tested even more accurately in laboratories. The model explains (almost) all the phenomena known to us that have to do with elementary particles. There is therefore a border area where the in-deterministic QM transitions into the deterministic GRT. This area exists near the horizon of a black hole. The curvature is so great (or energy density) that quantum effects begin to play a role in GRT. Therefore, an overarching theory must be constructed, i.e., a quantum gravity model. There are now two options: either adjust the GRT or the QM. The latter option is considered blasphemous by many theorists. However, turning GRT into a quantum field is doomed to fail. How does one achieve indeterminism in gravitational theory? A new direction can be found in the direction of the change of topology of space.
Black hole physics and the paradoxes
Physicists have no idea what black holes actually are. Are they always formed by the collapse of a star or neutron star? Where is the mass of the hole located? At the centre with infinite density? That idea is untenable. One cannot hide behind the statement: don’t worry, because this knowledge remains hidden behind the horizon. But the information does not remain hidden! So what will a local observer record?The hole will evaporate and the information will eventually return. What will remain? And could a primordial black hole have been created in the early beginning of the universe? Theorists speak of instanton formation, a solution that also occurs in the Standard Model (SM) of particle physics, i.e., the Yang-Mills field (YM). This is interesting in relation to unification models. The YM field plays a fundamental role in the SM.
Cosmology
Our universe is expanding, and even accelerating. The explanation for this expansion remains an unsolved problem. An initial explanation was the so-called cosmological constant, already proposed by Einstein in his GRT.
Higher-dimensional world
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Quasars
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Cosmic strings
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ASFYON is a research company in The Netherlands on theoretical physics, cosmology and astrophysics
Great thinkers
“The most incomprehensible thing about the world is that it is comprehensible”. (Einstein}
“If you think you understand quantum mechanics, you don’t” (Feynman)
“Philosophy is too important to be left to philosophers” (Wheeler)
“Any particle behaves in a complete deterministic way, even though its behavior cannot be completely determined by any known observational technique” (’t Hooft)
“Consciousness cannot be accounted for in physical terms. For consciousness is absolutely fundamental. It cannot be accounted for in terms of anything else” .(Schrodinger)
“Mathematical beauty = truth “ (Dirac)
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New publication by R Slagter & son:
“Shadow of an Extra Dimension”
A must have
“Reinoud Slagter is internationally known for his research in theoretical physics and its applications to cosmology. This book gives a nicely illustrated overview of the field of theoretical physics, and its still unsolved key problems. Slagter illustrates this with historical and personal stories. The focus in the book is on the fundamental problem of combining Quantum Mechanics with the General Theory of Relativity, which governs gravity and operates on the largest conceivable scales, from black holes to the entire Universe. In the second half of the book the author presents a new exact black hole solution in a five-dimensional quantum gravity model. Among other things, this new solution allows the formation of supermassive black holes very early in the history of the Universe, as has recently been found by the James Webb Telescope. If confirmed, this new model may open the exciting
perspective that this work could be an important step towards a definitive understanding of black holes”.
Edward P.J. van den Heuvel, emeritus professor of astrophysics, University of Amsterdam and Free University, Brussels
