Decoherence is a process with an inherent arrow of time that makes it analogous to friction, heat dissipation, and other thermodynamic processes with an arrow of time; the effects are related, the arrows inevitably agree with one another, and decoherence is as real as the other processes (that increase the entropy); the time-reversal asymmetry of decoherence is inevitable because the environment can't be assumed to be non-locally entangled with the system in the far past, but it can be shown to be correlated in the future because of the evolution (and one can't ever assume anything about the future or impose "final" boundary conditions by the very definition of the future which is yet to be seen.I am trying to work out a heat sink, and look what I found. It is the Feast of Shavuot here, and I should be studying the Book of Ruth with the other Jews in the synagogue, where Boaz, the rich landowner of Beth Lechem, blesses Ruth the Moabite:
The LORD recompense thy work, and a full reward be given thee of the LORD God of Israel, under whose wings thou art come to trust.The story ends with miscegenation, and David being crowned King of Israel.
5 comments:
I recognize where the last quote comes from, but not the first.
Decoherence is a philosophically challenging concept from quantum physics (how can reality be dependent on an external observer?)
but there are many parallels in ordinary life, which can usually be grouped into the category "hypocrisy".
Anon.
How can reality be dependent on an external observer?
Reality exists in an un-defined, probabistical state. Only when forced by an external "observer" (not necessarily intelligent or alive) reality collapses and "has to choose" one of its possible states. Conceptually it is rather difficult to capture, but expressed in equations makes sense. It has little relevance for us, we live in a Newtonian universe. At least I do, I am not sure about others.
Think about cats. Schroediger's cats.
It is hard to abandon the framework of classical causality, which has served us so well for so long.
Nothing about the quantum is intuitive.
Anon.
Physical laws are the law in Kever Benjamin City. Our rabbis make sure that no treyfl quantum speculations reach our yeshives.
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