Hi Stephen: There must not be a general arrow of time since time in general relativity is local not only in his value but also its direction AFAIK
2014-11-09 2:25 GMT+01:00 Stephen Paul King <stephe...@charter.net>: > Hi Alberto, > > Is there really a global thermodynamic arrow of time? We can only infer > its existence based on theoretical organizations of data that we collect. > AFAIK, all "arrows" in actual physical dynamics are local. > > On Friday, November 7, 2014 5:26:40 PM UTC-5, Alberto G.Corona wrote: >> >> if time is the thermodynamic arrow then then is meaningless the notion of >> reversal of termodinamic arrow. >> >> In which time the termodinamic arrow is reversed? Does it mean that the >> time goes forward while termodinamic arrow goes backward? that contradict >> the first assumption!!! >> >> >> >> 2014-10-15 2:14 GMT+02:00 Stephen Paul King <step...@provensecure.com>: >> >>> Hi, >>> >>> I re-read S. Mitra's paper <http://arxiv.org/pdf/0902.3825v2.pdf> >>> again and it made more sense than before if I assumed that the reversible >>> measurement idea is to be taken as a local reversal to the "direction of >>> entropy flow" in an area and not the entire universe. >>> The trouble is this notion of locality. Are there any favorite >>> definitions of "locality" out there? AFAIK, it does not have a fixed size >>> in space, but may have a fixed size in "space-time" as location information >>> expands at the speed of light if we ignore the effects of local structure >>> that would modulate decoherence. This "decoherence" thing, IMHO, needs to >>> be looked at carefully. >>> In deference to Bruno, I should ask a question relevant to the >>> ongoing discussions. Is a finite universe with locally reversible time >>> consistent as a 1p world? >>> >>> -- >>> >>> Kindest Regards, >>> >>> Stephen Paul King >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Everything List" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to everything-li...@googlegroups.com. >>> To post to this group, send email to everyth...@googlegroups.com. >>> Visit this group at http://groups.google.com/group/everything-list. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Alberto. >> > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > -- Alberto. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
