Zee iletter the next section, Section We

  • ۲۹ بازدید

Zee iletter the next section, Section We

The trouble with this specific history claim Zee can make is the fact traditional spin-2 gravitons are supposed to has actually mass, so the law of gravity will have a limited assortment, however, this might be a trivial point in assessment to the problems currently chatted about inside mainstream (spin-2 graviton) methods to quantum the law of gravity. 5 “Coulomb and you can Newton: Repulsion and Interest”, offers a somewhat even more tight formulation of your conventional quantum field principle getting electromagnetic and you can gravitational pushes, that’s really worth research. It makes a similar basic error given that 1935 Yukawa principle, for the path inbuilt from evaluate bosons ranging from only the dust upon which this new forces appear to work, thus inaccurately overlooking all the other particles throughout the market hence also are adding virtual dirt towards communication!

Because of the involvement of mass with the propagator, Zee uses a trick from Sidney Coleman where you work through the electromagnetic force calculation using a photon mass m and then set m = 0 at the end, to simplify the calculation (to avoid dealing with gauge invariance). Zee then points out that the electromagnetic Lagrangian density L = -(1/4)F yards letter m letter = ۲dA yards letter = d m A n – d n A m , A m (x) being the vector potential) has an overall minus sign in the Lagrangian so that action is lost when there is a variation in time! ” (Zee, page 31.)

That is a bit impressive and you may tells us that quantum profession theory offers the proper influence instead of fiddling within this repulsion circumstances: a couple of equivalent electronic costs replace gauge bosons during the a fairly easy ways together, and therefore techniques, similar to someone shooting things at both, reasons them to repel (when someone fires anything from the your, he or she is pushed away from you from the recoil and you is banged of them if you find yourself struck, which means you was one another pushed aside!). See that such as for example traded digital photons must be prevented (otherwise covered) by costs to provide momentum and create forces! For this reason, there should be a connection mix-point having costs so you’re able to really take-in (or spread right back) digital photons, and that facts even offers a straightforward choice materials of the Coulomb force quantum career theory having fun with geometry unlike highway integrals!

F yards letter (in which F

Zee next continues to help you gravitation, where in actuality the state – out-of their perspective – is exactly how to get the contrary results for 2 equivalent-signal gravitational fees than just you have made for the very same digital charges (interest away from equivalent charges, perhaps not repulsion!). By the ignoring the fact all of those other mass in the fresh market are off instance charges to help you his a few nothing lumps of your energy, and so try adding gravitons with the correspondence, Zee helps make the popular mistake of having so you can postulate a go-dos graviton getting change iraniansinglesconnection pÅ™ihlášení anywhere between their several people (in the a non-existent, fictional blank world!) just as Fierz and you can Pauli got suggested into 1939.

Up to now, Zee gets into fantasy physics, with a go-2 graviton that have 5 polarizations being replaced between people to make an always glamorous push anywhere between one or two people, overlooking the remainder bulk on universe.

Starting the path inbuilt using this type of bad Lagrangian (having a little bulk set in the new photon to help make the job concept really works) results in a positive sign into potential times between a couple lumps out of similar charges, so: “The fresh electromagnetic force ranging from such as costs is actually repulsive!

It’s a little wrong of your to say with the page 34 you to definitely once the a chance-2 graviton Lagrangian causes common attraction to possess a totally not true, misleading path inbuilt regarding graviton change ranging from just a couple masses, “we come across one to when you find yourself instance [electric] charge hold back, masses [gravitational charge] attention.” It is wrong while the even forgetting the mistake I’ve pointed out out of disregarding gravitational charge (masses) all around us throughout the market, Zee has got themselves to the a catch 22 or circular conflict: he basic assumes on new twist-2 graviton to start off which have, following says one whilst would lead to destination in the entirely unreal (blank other than a few attempt public) world, he’s explained as to the reasons public interest. Although not, truly the only reason why the guy assumes on a go-2 graviton to start off which have is really because that provides brand new wanted functions about incorrect calculation! It isn’t a description. For people who assume some thing (without the actual evidence, such observation of spin-2 gravitons) because you comprehend it can some thing within the a particular calculation, you’ve not told me anything at that time providing that calculation and that just ‘s the reason for the belief you are making! (By the example, you simply can’t remove yourself up in the air from the tugging within the bootstraps.)

محمد رضا شریفی
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