Neutral Kaon exception Τμήμα Άποψης
1 #105364The behavior of a particle called the neutral Kaon provides an exception to the generalization that physical processes are time-symmetric AND this asymmetry may account for the time-asymmetry expressed by the Second Law of Thermodynamics. |
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- ΑναφορέςΠροσθήκη αναφοράςList by: CiterankMapLink[1] Neutral Kaon exception
Συγγραφέας: Huw Price - Professor of Philosophy and Director, Center for Time, University of Sydney
Παρατέθηκε από: Peter Baldwin 1:17 AM 2 May 2011 GMT
Citerank: (3) 100641The Arrow of Time?A map exploring some issues concerning the nature of time that lie at the boundary of physics and philosophy. The map follows up a talk to the Blackheath Philosophy Forum on 2 April 2011 by Huw Price, Professor of Philosophy and director of the Center for Time at Sydney University.7F1CEB7, 105217Assumption of molecular chaosThe H-theorem is invalidated by its reliance on a time-asymmetric assumption: the Stosszahlansatz ("assumption of molecular chaos"). This is the assumption that probabilities of velocities of colliding particles are independent.13EF597B, 115263Ontological costHuw Price notes that anthropic reasoning that appeals to some form of multiverse cosmology requires us to posit that much more exists than we are ordinarily aware of - that it has a huge 'ontological cost' - and that we should therefore look for less costly explanations.13EF597B
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| Απόσπασμα- "As I noted, however, there seems to be one little exception to the principle that the basic laws of physics are time-symmetric. This exception, first discovered in 1964, concerns the behavior of a particle called the neutral kaon. To a very tiny extent, the behavior of the neutral kaon appears to distinguish past and future - an effect which remains deeply mysterious. Tiny though it is, could this effect perhaps have something to do with the familiar large-scale asymmetries (such as the tendency of buildings to collapse but not 'uncollapse')?" |