- #1
member 11137
The concept of "on-shell mass": what is it?
Following the recommandation of MTd2, but after some hesitations, here are my questions.So, reading rapidly a first time the document “Curved Momentum Space and Relative Locality” [arXiv: 1205.1304v1 [hep-th] 7 May 2012 on another part of this forum], I find it interesting to see a discussion on the geometry of phase space. The concluding relation (19) was for me a kind of illumination in that sense that it had a formalism recalling a generic relation obtained in a (I am sorry for this remark) personal research. Reading the document a second time with more attention and paying attention to “details” I discovered the (for me) unknown the “on-shell mass” concept introduced in equation (3), page 3. I have in between “googled” on Internet with the hope to learn more via some free scientific articles. This is thus inducing my questions:
1°) why is the subscript “a” in the above equation going from 0 to 3 and not from 1 to 3?
2°) the “on-shell mass” concept seems to be strongly related to the actual analyzes of the LHC experiments (renormalization ...), all things far over my head but so fascinating when you look for unity in physics and when you try to understand how the nature works; is it exact?
3°) do we actually have a stabile theory concerning this concept or –as I guess it through the literature- are we yet condemned to test the accordance between some hypothesis via statistic methods (Monte Carlo...) and results of experiments? Example given: ...to test the energy-momentum relation which is in fact the relation involved in the above reference.
I beg my pardon if, as amateur, I should not ask such question (In that case feel free to delete this question from the forum) because it is a too “hot stuff”.
Best regards
Following the recommandation of MTd2, but after some hesitations, here are my questions.So, reading rapidly a first time the document “Curved Momentum Space and Relative Locality” [arXiv: 1205.1304v1 [hep-th] 7 May 2012 on another part of this forum], I find it interesting to see a discussion on the geometry of phase space. The concluding relation (19) was for me a kind of illumination in that sense that it had a formalism recalling a generic relation obtained in a (I am sorry for this remark) personal research. Reading the document a second time with more attention and paying attention to “details” I discovered the (for me) unknown the “on-shell mass” concept introduced in equation (3), page 3. I have in between “googled” on Internet with the hope to learn more via some free scientific articles. This is thus inducing my questions:
1°) why is the subscript “a” in the above equation going from 0 to 3 and not from 1 to 3?
2°) the “on-shell mass” concept seems to be strongly related to the actual analyzes of the LHC experiments (renormalization ...), all things far over my head but so fascinating when you look for unity in physics and when you try to understand how the nature works; is it exact?
3°) do we actually have a stabile theory concerning this concept or –as I guess it through the literature- are we yet condemned to test the accordance between some hypothesis via statistic methods (Monte Carlo...) and results of experiments? Example given: ...to test the energy-momentum relation which is in fact the relation involved in the above reference.
I beg my pardon if, as amateur, I should not ask such question (In that case feel free to delete this question from the forum) because it is a too “hot stuff”.
Best regards