Timeline for Direct interaction theory
Current License: CC BY-SA 3.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 22, 2015 at 16:49 | history | reopened |
Kyle Kanos Emilio Pisanty Brandon Enright Selene Routley Kyle Oman |
||
| Apr 16, 2015 at 13:08 | history | edited | Kyle Kanos | CC BY-SA 3.0 |
added formatting breaks, fixed odd punctuation style, added extra tags
|
| Apr 16, 2015 at 10:43 | comment | added | Sheldon Kripke | @ACuriousMind : Have edited my question | |
| Apr 16, 2015 at 9:20 | review | Reopen votes | |||
| Apr 22, 2015 at 16:49 | |||||
| Apr 16, 2015 at 9:04 | history | edited | Sheldon Kripke | CC BY-SA 3.0 |
Tried to elaborate what I meant by "what mediates between two particles " .
|
| Apr 13, 2015 at 20:01 | history | closed |
ACuriousMind♦ John Rennie Ryan Unger Kyle Kanos Martin |
Needs details or clarity | |
| Apr 13, 2015 at 9:02 | comment | added | Sheldon Kripke | @ACuriousMind : Would I seem to be on a vague quest if I ask that , according to these theories, which don't require the concept of field as an independent degree of freedom or a mediator between two particles , what leads to the communication between two particles ? Any kind of signal that travels from one to another ?Browsing through the web and reading few non technical articles on wheeler feynman theory , I can infer that they mentioned about the propagation of advanced and retarded waves .Is it really so ? | |
| Apr 12, 2015 at 16:47 | comment | added | ACuriousMind♦ | Ah, you mean the classical version of Wheeler-Feynman absorber theory formulated in terms of the Fokker action, for a somewhat rigorous treatment, see e.g. this paper. Unfortunately, your question doesn't make sense. There is no "agent" defined by the Fokker action, it's simply a non-local action functional that gives the correct physics without involving the ED fields at the level of the action. | |
| Apr 12, 2015 at 16:30 | comment | added | Sheldon Kripke | @ACuriousMind :jameshedberg.com/docs/directactionelectrodynamics.pdf | |
| Apr 12, 2015 at 14:41 | review | Close votes | |||
| Apr 13, 2015 at 20:01 | |||||
| Apr 12, 2015 at 14:39 | comment | added | Sheldon Kripke | en.wikipedia.org/wiki/Action_at_a_distance | |
| Apr 12, 2015 at 14:38 | comment | added | ACuriousMind♦ | @SheldonKripke: It's a technical (QFT) term, see this question. | |
| Apr 12, 2015 at 14:36 | comment | added | Sheldon Kripke | @ACuriousMind : What is meant by mediating fields being integrated out ? | |
| Apr 12, 2015 at 14:22 | comment | added | ACuriousMind♦ | Please give a reference for "direct interaction theory". I think you might be talking about effective field theories where the mediating field has been integrated out, but it is merely an approximation, not an equivalent theory for the physics at all scales. | |
| Apr 12, 2015 at 10:10 | comment | added | Sheldon Kripke | @hft : Maybe but cannot certainly say because of the jargons you have used ...Basically , I would like to know how do we view ,in direct interaction theory , the electrostatic attraction . Like when we use fields we say that the particles exert force one another by interacting with each other's fields. So , how do paricles exert force on each other according to this theory ...does something propagate or travel from one particle to another ? | |
| Apr 12, 2015 at 7:27 | comment | added | hft | Welcome to Physics StackExchange. I think you are asking about something like local field theories? Like, what's the difference between a photon-mediating the electron magnetic force versus the instantaneous coulomb potential description? Is that what you are asking about? | |
| Apr 12, 2015 at 7:05 | review | First posts | |||
| Apr 12, 2015 at 7:27 | |||||
| Apr 12, 2015 at 7:05 | history | asked | Sheldon Kripke | CC BY-SA 3.0 |