Astrophysicist Stacy McGaugh, at his Triton Station blog, observes that there are far more thin spiral galaxies than expected from cold dark matter halo explanations of galactic rotation curves. MOND does much better in this respect.
This is notable because MOND wasn't designed to produce this data point, and because once again, MOND is predictive while the LambdaCDM model of cosmology is not.
He is mostly highlighting results from a December 2025 paper by Benavides et al., that had escaped my notice in the daily flood of new astronomy papers. Some key illustrations from that paper:
A final illustration is from one of McGaugh's own papers in 1998 and shows that MOND tends to produce flatter galaxies than Newtonian physics does (even though, unlike Deur's model, MOND is spherically symmetric, rather than relying, in part, on the shape of a galaxy to demonstrate the dark matter replacing gravitational effect).
1 comment:
any thoughts is it plausible on
arXiv:2601.03292 (gr-qc)
[Submitted on 5 Jan 2026]
From Loop Quantum Gravity to a Theory of Everything
Adrian P. C. Lim
Witten described how a path integral quantization of Wilson Loop observables will define Jones polynomial type of link invariants, using the Chern-Simons gauge theory in R . In this gauge theory, a compact Lie group , together with a representation of its Lie Algebra , describe the symmetry group and fundamental forces acting on the particles respectively. However, it appears that this theory might be part of a bigger theory.
We will incorporate this theory into the Einstein-Hilbert theory, which when reformulated and quantized using a gauge group, gives us a quantized theory of gravity in R . In this theory, we can quantize area, volume and curvature into quantum operators. By using both the Chern-Simons and Einstein-Hilbert action, we will write down a path integral expression, and compute the Wilson Loop observable for a time-like hyperlink in R , each component loop is coloured with a representation for the Lie Algebra , unifying the fundamental forces with gravity. This Wilson Loop observable can be computed using link diagrams, and it can be written as a state model, satisfying a Homfly-type skein relations.
We will show that the Wilson Loop observable remains an eigenstate for the quantum operators corresponding to spin curvature, but it is not an eigenstate for the area and volume quantized operators, unless the representation for is trivial. This implies that in the Planck scale where quantum gravity is important, we see that all the particles are indistinguishable, hence the fundamental forces disappear and only interaction between matter and space-time remains.
Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
MSC classes: 83C45, 81V22, 81T20, 81T45
Cite as: arXiv:2601.03292 [gr-qc]
As explained in [28], a set of particles is represented as a basis in a vector space
V , whereby the elements in the Lie algebra, represented as an endomorphism of
the vector space V , act on it irreducibly. The force carrying bosons are described
as representations of generators in this Lie algebra g. When the representation of
the Lie algebra is trivial, it means the particles, each represented by a component
time-like loop in a matter hyperlink, transform trivially under the gauge group G,
and are no longer distinguishable by the fundamental forces in the Standard Model.
The gauge groups U(1), SU(2) and SU(3) will no longer act on the particles. We
will boldly conclude that at short distances when gravity is dominant, the remaining
three fundamental forces are no longer observable
Post a Comment