‘We hear this “sequence concept requires new graviton” procedure much, although only factor I’ve seen would be the fact it predicts good spin-dos particle.’ – Rob Knop, ,
‘An effective massless spin dos particle is in fact expected to feel an excellent graviton of the certain overall performance that go back into Feynman, I believe.’ – Sequence theorist Aaron Bergman, , (In fact Richard P. )
‘Deprive, also all the advanced reason a good massless twist dos particle must be the graviton, there are even explicit computations showing that forgone achievement …’ – Moshe, ,
‘Aaron Bergman published: ‘A good massless spin 2 particle is pretty much needed to be a good graviton by specific performance that go returning to Feynman, I do believe.’
Generally you don’t need to a large number of them lying as much as, even though I don’t know this new rigid statement to that impact
‘Any kind of these email address details are, they need to has actually most presumptions. … All of these have nothing to do with the law of gravity. A beneficial graviton must relate with any kind of occupation – plus a very certain way.
‘Thus, it would be fascinating to look at the results you’re talking regarding the, and see whatever they actually say. Maybe the Einstein-Hilbert step ‘s the “minimum nonrenormalizable” way for a chance-dos particle to interact with other dirt… any sort of which means?’ – Teacher John Baez, ,
‘B produces: ‘The twist dos particle can only just couple into the opportunity-impetus tensor – given that gravity do.’Oh? As to why?’ – Teacher John Baez, ,
‘…the overriding point is that the massless spin-dos field are described of the a symmetrical a few-list [rank-2] tensor with a specific gauge proportion. … So their origin need to be a shaped divergenceless a few-index tensor. ‘ – Teacher Sean Carroll, ,
‘There is a general belief, reinforced by statements in standard textbooks, that: (i) one can obtain the full non-linear Einstein’s theory of gravity by coupling a massless, spin-2 field hab self-consistently to the total energy momentum tensor, including its own; (ii) this procedure is unique and leads to Einstein-Hilbert action and (iii) it only uses standard concepts in Lorentz invariant field theory and does not involve any geometrical assumptions. After providing several reasons why such beliefs are suspect – and critically re-examining several previous attempts – we provide a detailed analysis aimed at clarifying the situation. First, we prove that it is impossible to obtain the Einstein-Hilbert (EH) action, starting from the standard action for gravitons in linear theory and iterating repeatedly. … Second, we use the Taylor series expansion of the action for Einstein’s theory, to identify the tensor Sab, to which the graviton field hab couples to the lowest order (through a term of the form Sabhab in the lagrangian). We show that the second rank tensor Sab is not the conventional energy momentum tensor Tab of the graviton and provide an explanation for this feature. Third, we construct the full nonlinear Einstein’s theory with the source being spin-0 field, spin-1 field or relativistic particles by explicitly coupling the spin-2 field to this second rank tensor Sab order by order and summing up the infinite series. Finally, we construct the theory obtained by self consistently coupling promo kódy badoo hab to the conventional energy momentum tensor Tab order by order and show that this does not lead to Einstein’s theory.’
Feynman points out in the Feynman Lectures on the Gravitation, page 30, you to gravitons will not need to feel twist-2, with not been noticed
Now we shall check good predictive proof the latest speed regarding the fresh universe which got its start up until the observation that market try accelerating, a = Hc.
Note that new external speed off repulsion is compared of the inward velocity because of appeal regarding gravity, so the data is demonstrating an absence of acceleration. Since cosmologists know on the Friedmann metric of standard relativity you to new credit crunch is going to be postponing (extension would be decelerating) at large distances, the absence of one deceleration implied the clear presence of an acceleration. Hence, since Nobel Laureate Phil Anderson says, this new noticed truth regarding your imaginary cosmological ongoing and ebony opportunity is just one to:
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