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 <[email protected]>: > 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 <[email protected]>: >> >>> 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 [email protected]. >>> To post to this group, send email to [email protected]. >>> 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
