Skip to main content
14 events
when toggle format what by license comment
Apr 26, 2019 at 7:12 answer added Vladimir Kalitvianski timeline score: 4
Nov 21, 2017 at 13:24 answer added BoGGoG timeline score: 6
May 10, 2017 at 19:01 history edited Qmechanic CC BY-SA 3.0
edited title
Jun 25, 2014 at 20:16 comment added Qmechanic @WIMP: Please provide reference to support the claim in the title (v3).
May 23, 2014 at 17:38 history edited Qmechanic
edited tags
May 13, 2012 at 14:31 answer added Arnold Neumaier timeline score: 30
May 8, 2012 at 14:10 history edited Qmechanic
retagged;
Aug 21, 2011 at 6:40 history tweeted twitter.com/#!/StackPhysics/status/105167400542015488
Aug 21, 2011 at 5:47 vote accept WIMP
Aug 21, 2011 at 5:42 comment added WIMP Marek: But that's exactly my question. I've repeatedly encountered referral to theories with higher order Lagrangians (I mean higher order in derivatives) as 'non-local' despite these not actually having a 'non-local' interaction of the type you are referring to. So what do they mean?
Aug 16, 2011 at 23:08 answer added Bill K timeline score: 10
Aug 16, 2011 at 14:01 answer added Daniel Grumiller timeline score: 52
Aug 16, 2011 at 8:30 comment added Marek Higher order in what? Both higher powers of fields and higher powers of derivatives are not non-local. Non-locality always means interaction between fields at points separated by some distance (instead of at a single point). This can be introduced e.g. by non-polynomial functions in the Lagrangian but I am not sure what your higher-order means. In any case, you should spend some effort on making the question precise.
Aug 16, 2011 at 7:50 history asked WIMP CC BY-SA 3.0