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| Tags: bosons, diagram, feynman, force |
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#11
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On Feb 4, 4:38 pm, wrote:
On Feb 4, 4:35 pm, JanPB wrote: On Feb 4, 4:01 pm, wrote: On Feb 4, 3:51 pm, PD wrote: On Feb 4, 5:23 pm, wrote: On Feb 4, 8:11 am, PD wrote: On Feb 3, 7:24 pm, wrote: Bosons would be emitted simultaneously from every direcftion continuously if they are to create force. They cannot aim as in a Feynman diagram. Mitch Raemsch Twice Nobel Laureate 2008 They don't aim. What on earth gives you the idea that they aim? If you explode a shrapnel grenade, and one of the bits of shrapnel kills a squirrel in a tree, and you draw a line showing the path of the shrapnel from the grenade to the squirrel that accounts for why the squirrel suddenly fell from the tree, why would you conclude that you aimed that bit of shrapnel at the squirrel? PD Feynman diagrams aim. Uh, no, they don't. Sorry. Repeating the same bonehead statement twice in a row does not make it more true, especially coming from someone who doesn't know the first thing about Feynman diagrams or what they mean. PD- Hide quoted text - - Show quoted text - Yes they do. Cite reference. -- Jan Bielawski- Hide quoted text - - Show quoted text - The reference is any Feynman diagram. Mitch Raemsch Twice Nobel Laureate 2008 Circular references don't count. -- Jan Bielawski |
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#12
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On Feb 4, 9:32*pm, PD wrote:
On Feb 4, 11:44*am, "Y.Porat" wrote: On Feb 4, 6:11*pm, PD wrote: On Feb 3, 7:24*pm, wrote: Bosons would be emitted simultaneously from every direcftion continuously if they are to create force. They cannot aim as in a Feynman diagram. Mitch Raemsch Twice Nobel Laureate 2008 They don't aim. What on earth gives you the idea that they aim? If you explode a shrapnel grenade, and one of the bits of shrapnel kills a squirrel in a tree, and you draw a line showing the path of the shrapnel from the grenade to the squirrel that accounts for why the squirrel suddenly fell from the tree, why would you conclude that you aimed that bit of shrapnel at the squirrel? PD ---------------------- idiot crook!! no particle of physical entity that moves in a * straight line can produce any attraction force First of all, no one says the virtual particles move in straight lines. It might help for you to read a short and friendly book by Richard Feynman called "QED: ---------------- thanks for the advice but i have seen Fenmans deal with it it i s not a physical dealing it is jsut a partial mathematical model!! very partial and crippled in a way that it cant give us more advance you cant do advance if you dont get deeper into the real process that happense in reality you say no one claimes that bosons or any other attraction agent is moving in straight lines.. even just that say is some advance twards better understanding of reality !! but only vert 'some' while making a real calculation you **cant ignore* the real process ie the real path that those agents do !! you miscalculate it and decieve others and youself because say it movesin a straight line it makes another distance on its way untill hiting the target--compared another posibility that it moves a big curved path tha tmakes the distance of actions much bigger as known if the distance is very short it needs' or hints about a big mass if OTHOA the distance of cation is much bigger (due to a curved path) the agent needs to be much less in mass. so the real geomertic components involved are criticslly important and cannot be neglected (in order of coming closer to reality) not to mension fo r instance that the difference between moving in a straight line or a curved line is a PRINCIPAL factor that by neglecting it will prevent more deeper understanding and advance in other attraction forcess and i dont have to remind you the deal lock of QM in solving sat Gravitation . i am not surprised about it because i know what is rotten in the exiting situation 2 no force agent can be bigger than its 'mother' that gave him 'birth' !! (it doe s not make sense in biology as well as in physics iow a clear immediate 'red light' for something rotten!! and over speculative 3 the photon can not the cause of say EM force it is a result of it not a cause once moving only in straight lines they should be escaping form our material world and lost in the infinity of the univers iow it should be deluted quickly by not hitting any traget and getting lost (no reason why they should move to targets that 'you ' what them to move to !!) and many others ereasoning that you could do provided that you wouls start to open your mind and (i refrain at this point from being insultive ) and start to be a bit more skeptic than a not religous beliver !! The Strange Theory of Light and Matter" ---------------- nature (the inorganic one ) is not starnge it ha s ound a simple principles all the strangness is due only to ignorance !! so that you have a little better idea what the theory actually says. Secondly, another poster has already given a sizable hint which you no doubt missed: What is the behavior of time-reversed repulsion? ------------------ had you realy undestood that TIME IS you would not deal a second with 'time reversal' it is stupid and ignorant time as is does not do reverse -- only forwards !! nothing can stop it from moving forwwards and as for amthematical junglarings and foolong around just leave it for mathematicians to play with ...... save me the word (:-) ATB Y.Porat --------------------------- |
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#13
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#14
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On Feb 5, 5:54*pm, PD wrote:
On Feb 4, 7:01*pm, Phil Cartwright Putting things more simply: you're both wrong. I think you read a little too much into the rather broad hint that I mentioned. You are right about virtual particles being able to carry momentum that "points backward". It is also true that in a tree-level diagram between two electrons, there is a vertex term contributing to the Green's function for one of the vertices that looks like -i(-e)[gammu_mu]. Changing that to a positron vertex simply means changing (-e) to (e). Likewise the Feynman propagator for the electron leg at that vertex is the difference in two terms, both corresponding to a negative charge being created at (x, t) and being annihilated at (x', t'), with the terms corresponding to tt' and tt'. It's well-known that an electron propagator proceeding forward in time is identical with a positron propagator traveling backwards in time. Thus, by making an appropriate transformation to time-reverse one of the electron legs in the lowest- order tree diagram, you switch from an electron-electron (repulsive) interaction to an electron-positron (attractive) interaction. -- There's only four things you can be certain of: taxes, change, spam, and death.- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - ---------------------- you dont have to buy any stupid croocked manipolation and play chess with Feynemen or youself we are playing chess with NATURE!!! not with ouselves !! no stupid crooked diagram that takes the whanter end results and manipolates them backwards (from the WHANTED end result to the start 'reasonings' ) can comvince people who are not parrots or suckers !! iow nature does not play your chess play with youself (and Feynman) it palyes its own play and you are far away from natures play as far as earth is far from galaxy No 10 and the fact is that this stupid self play is stuck in the mudd with idotic theories of virtual; bosons that are 90 times bigger than their mother a schole boy will tell you that you are a dumb parrot Y.Porat -------------------------------------------- |
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#15
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On Feb 5, 12:09*pm, Tom Roberts wrote:
wrote: On Feb 4, 4:35 pm, JanPB wrote: On Feb 4, 4:01 pm, wrote: Feynman diagrams aim. Uh, no, they don't. Yes they do. Cite reference. The reference is any Feynman diagram. Nonsense. You CLEARLY do not know what a Feynman diagram represents. Every Feynman diagram represents a specific INTEGRAL. In the QFT to which the diagram belongs there is a 1-to-1 mapping between components of the diagram and terms in the integral. For instance, in QED the squiggly line corresponding to a photon corresponds to a term p_slash/p^2; an electron-electron-photon vertex corresponds to \integral d^3p/E delta^4(p1+p2+p3) \alpha; etc. As I said before, it is implicit in the definition of the diagram that one integrates every vertex over all of momentum space. This directly implies that the directions of the lines connecting vertices are of no consequence whatsoever, because they will "point" in all possible directions during the integrations. As I said before, ALL that matters is the topology of the diagram (that determines how the various terms of the integral are inter-connected). And if you think that because a given line connects to a given vertex in a specific diagram that the object represented by the line "is aimed" at that vertex, again you would be wrong -- one must SUM over all possible diagrams, and (ANTI-)SYMMETRIZE over all external legs. This completely "jumbles" any correspondence you might imagine between legs and vertices. Tom Roberts ---------------- you can have all diagrams and integrals in the world but if all thatis based on wrong assuptions ?? you can stuff all your 'sophystication: you have a basic assumption that you deal with PHOTONS AS force mediators but allas ?? what would you do if one day you will find that PHOTONS CANNOT BE ANY ATTRACTION FORCE ???!! MEDIATORS ??!! Y.Porat ---------------------- |
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#16
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On Feb 6, 8:23*am, "Y.Porat" wrote:
On Feb 5, 12:09*pm, Tom Roberts wrote: wrote: On Feb 4, 4:35 pm, JanPB wrote: On Feb 4, 4:01 pm, wrote: Feynman diagrams aim. Uh, no, they don't. Yes they do. Cite reference. The reference is any Feynman diagram. Nonsense. You CLEARLY do not know what a Feynman diagram represents. Every Feynman diagram represents a specific INTEGRAL. In the QFT to which the diagram belongs there is a 1-to-1 mapping between components of the diagram and terms in the integral. For instance, in QED the squiggly line corresponding to a photon corresponds to a term p_slash/p^2; an electron-electron-photon vertex corresponds to \integral d^3p/E delta^4(p1+p2+p3) \alpha; etc. As I said before, it is implicit in the definition of the diagram that one integrates every vertex over all of momentum space. This directly implies that the directions of the lines connecting vertices are of no consequence whatsoever, because they will "point" in all possible directions during the integrations. As I said before, ALL that matters is the topology of the diagram (that determines how the various terms of the integral are inter-connected). And if you think that because a given line connects to a given vertex in a specific diagram that the object represented by the line "is aimed" at that vertex, again you would be wrong -- one must SUM over all possible diagrams, and (ANTI-)SYMMETRIZE over all external legs. This completely "jumbles" any correspondence you might imagine between legs and vertices.. Tom Roberts ---------------- you can have all diagrams and integrals in the world but if all thatis based on wrong assuptions ?? you can stuff all your * 'sophystication: you have a basic assumption that you deal with PHOTONS *AS force mediators but allas ?? what would you do if * *one day you will find that PHOTONS CANNOT BE ANY *ATTRACTION *FORCE ???!! * MEDIATORS *??!! Y.Porat ----------------------- Hide quoted text - - Show quoted text - The bosons in a Feynman diagram must aim. That is stupid. MItch Raemsch Twice Nobel Laureate 2008 |
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#17
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On Feb 6, 3:48 pm, wrote:
On Feb 6, 8:23 am, "Y.Porat" wrote: On Feb 5, 12:09 pm, Tom Roberts wrote: wrote: On Feb 4, 4:35 pm, JanPB wrote: On Feb 4, 4:01 pm, wrote: Feynman diagrams aim. Uh, no, they don't. Yes they do. Cite reference. The reference is any Feynman diagram. Nonsense. You CLEARLY do not know what a Feynman diagram represents. Every Feynman diagram represents a specific INTEGRAL. In the QFT to which the diagram belongs there is a 1-to-1 mapping between components of the diagram and terms in the integral. For instance, in QED the squiggly line corresponding to a photon corresponds to a term p_slash/p^2; an electron-electron-photon vertex corresponds to \integral d^3p/E delta^4(p1+p2+p3) \alpha; etc. As I said before, it is implicit in the definition of the diagram that one integrates every vertex over all of momentum space. This directly implies that the directions of the lines connecting vertices are of no consequence whatsoever, because they will "point" in all possible directions during the integrations. As I said before, ALL that matters is the topology of the diagram (that determines how the various terms of the integral are inter-connected). And if you think that because a given line connects to a given vertex in a specific diagram that the object represented by the line "is aimed" at that vertex, again you would be wrong -- one must SUM over all possible diagrams, and (ANTI-)SYMMETRIZE over all external legs. This completely "jumbles" any correspondence you might imagine between legs and vertices. Tom Roberts ---------------- you can have all diagrams and integrals in the world but if all thatis based on wrong assuptions ?? you can stuff all your 'sophystication: you have a basic assumption that you deal with PHOTONS AS force mediators but allas ?? what would you do if one day you will find that PHOTONS CANNOT BE ANY ATTRACTION FORCE ???!! MEDIATORS ??!! Y.Porat ----------------------- Hide quoted text - - Show quoted text - The bosons in a Feynman diagram must aim. Why? -- Jan Bielawski |
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#18
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Motes eat. Shut up, Porat.
Deuterium's and americium's nucleòns are heavier than iron's and nickel's nucleòns. Silicon's and carbon's charges are heavier than silica's and carba's charges. Protòn's and neutròn's quarks are heavier than piòn's and kaòn's quarks--if one gave them antiprotòn and antineutròn, they will happily decay intom the latter pairs, and then leptòns and neutrinos which are even leihter. -Aut |
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#19
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Y.Porat wrote:
what would you do if one day you will find that PHOTONS CANNOT BE ANY ATTRACTION FORCE ???!! Cannot possibly happen. Photons are MATHEMATICAL OBJECTS that model electromagnetic interactions. Mathematically they are quite clearly capable of transmitting both attractive and repulsive forces (which it is depends on the relative phases). Now it could happen that the theories we have which include photons turn out to not be the ultimate theory, but only an approximation (albeit an extremely good one for all experiments so far). Indeed current progress toward quantum gravity makes it seem likely that all current QFTs are merely effective field theories -- approximations to a deeper theory. But that is quite different from what you said. You should actually LEARN something about the relevant theories before being so quick to dispute them. Tom Roberts |
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#20
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On Feb 8, 11:11 pm, "Y.Porat" wrote:
On Feb 7, 9:23 am, "Autymn D. C." wrote: Motes eat. Shut up, Porat. Deuterium's and americium's nucleòns are heavier than iron's and nickel's nucleòns. Silicon's and carbon's charges are heavier than silica's and carba's charges. Protòn's and neutròn's quarks are heavier than piòn's and kaòn's quarks--if one gave them antiprotòn and antineutròn, they will happily decay intom the latter pairs, and then leptòns and neutrinos which are even leihter. -Aut ------------------- it is eather me or you that are idiots There is a third option. [...] |
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