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wolram
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Can any, qg or string theory reproduce dark matter ?
wolram said:Can any, qg or string theory reproduce dark matter ?
f-h said:Marcus, MOND is a modified Newtonian mechanics. It's Newtonian gravity with an extremely strange modification in the low accelaration regime. It's not even specially relativistic. It's a fascinating phenomenological tool but it's certainly not something that makes sense to quantize IMO (plus it would be difficult to do so)
francesca said:I'm going to attend this seminar:
Luca Lusanna
Canonical gravity, York map and non-inertial frames: is dark matter a relativistic inertial effect?
Abstract: ... the rotation curves of galaxies in a framework more general of the non-relativistic MOND model and ...
marcus said:I am worried about Lusanna because he sounds out of touch with current MOND developments. He mentions only "non-relativistic MOND" and does not mention relativistic MOND in his abstract!
Dark matter is a hypothetical form of matter that is thought to make up approximately 85% of the total matter in the universe. It is called "dark" because it does not interact with light or other forms of electromagnetic radiation, making it invisible to traditional telescopes. The existence of dark matter is important because it helps explain the observed gravitational effects on visible matter in the universe, such as the rotation of galaxies and the bending of light from distant objects.
At this time, there is no evidence to suggest that dark matter can be reproduced by quantum gravity. QG is a theory that attempts to unify the fundamental forces of nature, including gravity, at a microscopic scale. While it may provide insights into the nature of dark matter, it is not currently able to fully explain its properties or origin.
String theory is another theoretical framework that attempts to unify all fundamental forces of nature. However, like QG, it is not currently able to fully explain the properties or origin of dark matter. While some variations of string theory may offer potential explanations for dark matter, it remains a topic of ongoing research and speculation.
Scientists study dark matter using a variety of methods, including gravitational lensing, which measures the bending of light from distant objects due to the presence of dark matter, and galaxy rotation curves, which track the rotational velocities of stars and gas within galaxies. In addition, scientists also use computer simulations and particle colliders to study the potential properties and interactions of dark matter particles.
The possibility of reproducing dark matter in a laboratory setting is currently being explored through experiments at particle colliders, such as the Large Hadron Collider. However, the exact nature and properties of dark matter are still unknown, making it difficult to produce in a controlled environment. It is also possible that dark matter may not interact with known particles and forces in the same way, making it even more challenging to reproduce in a laboratory setting.