Recent content by robva

In the context of the weak approximation he made in this paper, the lensing effect can not be directly computed from the lagrangien. He kept only the scalar term which can only couple with the trace of the Fmunu tensor to produce an invariant. Since this trace is zero, this model does not allow...

Indeed, Feynman showed in his lectures on gravitation that one can for example,recover the number for the advance of perihelion of mercury by using field theory using gravitons rather than the usual general relativity. It is equivalent to use the general relativity tensor or treat the problem...

I should have been more careful in the second paagraph. What I meant is that there will be no non-abelian net effect seen from outside the system. Like QCD, everything will stay confined. In the case of the bullet cluster, you see that the two mass maximum are offset from the two gas density...

From what I understand, it is not unlike the case of QCD where the non-abelian force (strong interaction) collapses into flux tubes, resulting into confinement. As a result this binding energy is indeed stored inside the system. As far as the gas is concerned, if the mass distribution is the...

The paper was updated on the arxiv server yesterday evening.