Will there ever be any form of experimental proof of multiple dimensions, even any thought experiment which would be able to proof or disprove the existence of one?
There are experiments that have been going on since 2000 to check that some of the compact dimensions of superstring theory may have dimensions as large as a micrometer. This would show up as a modification to the behavior of gravity at very short distances. They haven't found any such thing yet, but they haven't given up looking either.
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R0man
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The concept of hyperspace and multiple dimensions is a topic that has fascinated scientists and philosophers for centuries. While there is currently no experimental proof of hyperspace, there have been several theories and thought experiments proposed that attempt to explain its existence.
One such thought experiment is the "Flatland" analogy, which imagines a two-dimensional world inhabited by flat beings. These beings would have no concept of the third dimension until they were introduced to it by a higher-dimensional being, just as we have trouble visualizing or understanding a fourth dimension.
Another approach is through mathematical equations and theories, such as string theory and M-theory, which propose the existence of multiple dimensions beyond the three that we can perceive.
However, it is important to note that these theories and thought experiments are still just theoretical and have not been experimentally proven. It is possible that with advancements in technology and our understanding of the universe, we may one day be able to gather experimental evidence for the existence of hyperspace and multiple dimensions.
Until then, the concept of hyperspace and multiple dimensions remains a fascinating and thought-provoking topic that continues to spark curiosity and imagination.
This is an alert about a claim regarding the standard model, that got a burst of attention in the past two weeks.
The original paper came out last year:
"The electroweak η_W meson" by Gia Dvali, Archil Kobakhidze, Otari Sakhelashvili (2024)
The recent follow-up and other responses are
"η_W-meson from topological properties of the electroweak vacuum" by Dvali et al
"Hiding in Plain Sight, the electroweak η_W" by Giacomo Cacciapaglia, Francesco Sannino, Jessica Turner
"Astrophysical...
https://arxiv.org/pdf/2503.09804
From the abstract:
... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens proportional with their own classically generated gravitational field g, due to self-interaction of the gravitational field. It is based on the universal formula ρD =λgg′2 for the densityρ D of DM...