Yuri Danoyan Posted August 2, 2008 Share Posted August 2, 2008 (edited) Dear Dr Weinberg If space is discrete and time is continue,4-dimensional space-time lost its sense ? Sincerely Yuri Danoyan Yes Stephen Weinberg Edited August 2, 2008 by Yuri Danoyan multiple post merged Link to comment Share on other sites More sharing options...
iNow Posted August 2, 2008 Share Posted August 2, 2008 Wow. Link to comment Share on other sites More sharing options...
Mr Skeptic Posted August 2, 2008 Share Posted August 2, 2008 Who lost their sense? Link to comment Share on other sites More sharing options...
ajb Posted August 2, 2008 Share Posted August 2, 2008 I imagine it would be difficult to construct transformations which mix space and time if they both that a very different character. Thus space-time becomes "lost". Link to comment Share on other sites More sharing options...
Yuri Danoyan Posted August 3, 2008 Author Share Posted August 3, 2008 (edited) Andrei Linde: Lorentz invariance will be lost, i.e. space-time of special theory of relativity will loose its standard meaning. Yuri: If space is discrete and time- continue.... How about ds/dt ? Also become meaningless? Andrei: Why do you spend your time on weird ill defined concepts? Yuri: It is not weird question,because ds part of space;dt part of time. Because if used binary code for signify discrete and continue: ds/dt = 10/11 or 01/11 ,we get 2/3 or 1/3; look like charges of quarks; Edited August 3, 2008 by Yuri Danoyan multiple post merged Link to comment Share on other sites More sharing options...
Martin Posted August 4, 2008 Share Posted August 4, 2008 Dear Dr Weinberg If space is discrete and time is continue,4-dimensional space-time lost its sense ? Sincerely Yuri Danoyan Yes Stephen Weinberg It looks like when he wrote (if this were a real exchange) Dr. Weinberg did not spell his name correctly. Link to comment Share on other sites More sharing options...
Yuri Danoyan Posted August 4, 2008 Author Share Posted August 4, 2008 This is real exchange as well as all my correspndence with Frank Wilczek and Gerhard Hooft.See my other posts. Link to comment Share on other sites More sharing options...
iNow Posted August 4, 2008 Share Posted August 4, 2008 It looks like when he wrote (if this were a real exchange) Dr. Weinberg did not spell his name correctly. TBH, I've been very much struggling to understand Yuri's intent here at SFN, as discussion is not something his posts seem to generate... seems more like he's treating SFN as a personal online diary. Either way, though, I'll give him the benefit of the doubt and suggest that he merely made a transcriptional error, probably retyping by hand the response instead of copy/pasting it from an actual email. I really don't know if this is the case, but I suppose it is a non-zero probability. Link to comment Share on other sites More sharing options...
Yuri Danoyan Posted August 4, 2008 Author Share Posted August 4, 2008 http://blogs.chron.com/sciguy/archives/2008/01/the_states_most.html Different spelling casual Link to comment Share on other sites More sharing options...
Yuri Danoyan Posted August 17, 2008 Author Share Posted August 17, 2008 (edited) In "The Character of Physical Law", Lecture#7 "Seeking New Laws" Feynman wrote about his strong suspicion on simple presentation of geometry on the smallest unit of space is wrong. Why Feynman didn't speak about traditonal 4-dimensional space-time unit,but only about space? Edited August 18, 2008 by Yuri Danoyan multiple post merged Link to comment Share on other sites More sharing options...
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