Yes, I was wrong to use the term "gravitational force" but that does not really change the argumentation. I could equally well argue that GR does not describe well gravitation at large distances. Both Newton's law (of gravitation) and GR have only been verified experimentally at relatively short...
Accepting dark matter as a proven entity (such that one can start studying its properties) can be considered to be misleading as well :devil:
The other indirect evidence you mentioned (galactic cluster binding masses, lensing, etc.) in fact also relate to the effect of the gravitational force...
Before wondering what dark matter could be, it is probably wise to ask first whether it exists at all. As everybody knows, there is no direct evidence for this. The fact that galaxy rotation curves are flat for instance is no proof of dark matter, it could equally well mean there is something...
It is interesting to observe that you can reference an arxiv paper which is not published in a refereed journal. Recently, I also referenced my arxiv paper :
http://arxiv.org/abs/0712.1110 (on the same subject) and I was banned for this because I "tried to distribute a personal theory". The...
For the moment I have neither a metric nor an action. The only thing I have is a simple potential. What would prevent me from using the replacement described in my earlier post?
Rudi Van Nieuwenhove
The modification I had in mind is described in : http://arxiv.org/abs/0712.1110
I expected that it was too simplistic, but I don't exactly understand why. If I look for instance in the book Gravity, An Introduction to Einstein's general relativity by James B. Hartle, I find that the derivation...
Suppose one is not happy with Newton's law of gravitation and finds that it should be modified and that one has an equation describing the gravitational potential
\phi in function of radius. If one then want to obtain a relativistic description, would it be sufficient to replace in the...
I posted a message already on a more recent tread about the graviton (see 12-06-2007: Could the quanta of gravity be something other than spin 2 particles) but it seems more appropriate to post it here.
I'm also convinced that gravitons do not exist and it is easy to prove by a simple thought...
The idea that gravitation is the result of a distortion of the quantum vacuum by the presence of a mass was published in a peer reviewed journal (R. Van Nieuwenhove, Quantum Gravity : a Hypothesis, Europhysics Letters, 17 (1), pp. 1-4 (1992)).
Indeed, at this stage the theory is...
Is there an accepted explanation as to why the exact form of the Tully-Fisher relation depends on the wavelength by which the galaxy rotation is measured? I would think that rotation = rotation independent on how you observed it.
Rudi Van Nieuwenhove
Homework Statement
According to textbooks, the logarithmic p-series given by
[tex]\sum_{n=2}^n \frac{1}{n \ ln(n)^p } [\tex] and should converge when p>1 and diverge when [tex]p \leq 1 [\tex]
Homework Equations
Using MathCad (version 11 to 14), I find that the corresponding integral...
no gravitons
I think there does not even exist a graviton. Gravitation could be an induced force, resulting from all the other forces (original idea of Sakharov). Also, it is clear (for me) that describing gravitation by means of virtual particles quickly leads to a contradiction:
Let us...
It has become fashionable to talk about a "Theory of everything (TOE)". Are scientists really serious that their model describes really everything in the universe? If so, they must be either extremely pretentious or extremely stupid or probably both. At one time, the "Earth, Water, Air, Fire"...
Indeed, many new particles are predicted and I really hope that these particels will indeed be found. What is disturbing though is that gravity also seems to be mediated by virtual particles. So, gravity is treated as an ordinary force whereas there are a number of indications that point in a...