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Politics : View from the Center and Left

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To: koan who wrote (249644)4/26/2014 12:50:22 PM
From: Stock Puppy  Read Replies (3) of 542552
 
You may well be right, but I also always understood time runs back and forth the same.
I am correct - let me provide you with a reference.

The subject is "CPT" conservation Charge, Parity and when they found a violation in those, albeit a rare one, they added time. Most things are time invariant - except for probability on the macro scale, going forward or backward in time everything works the same. The rare event - a particle called the Kaon, sometimes does not follow this seemingly commonsense principle.

The reference is from 1995 from Stanford linear accelerator lab:

slac.stanford.edu

Here are pertinent excerpts (from third page labeled page 30):

In addition to having a strong theoretical basis, it [the CPT theorem] has also been tested experimentally to great accuracy. Conservation of CPT, but violation of CP, means that T alone cannot be an exact symmetry of the weak interaction. Thus, even on the most microscopic scale possible—the interactions of elementary particles—there is a difference between going forward and backward in time.




CP violation is now recognized as an important ingredient in the evolution of the universe. Immediately after the Big Bang the universe must have consisted of equal quantities of matter and antimatter. Over time it evolved toward the situation we see today, namely an overwhelming excess of matter over antimatter. Andrei Sakharov pointed out in 1967 that CP violation was necessary for the matter dominance of the universe to come about. This is one of many instances where particle physics has cosmological implications. Indeed, many theoretical physicists believe that the amount of CP violation we know about so far is insufficient to account fully for the matter dominance in the universe. Clearly, understanding the origin of CP violation is one of the most basic and far-reaching problems in particle physics.

I wish I was smarter and could have studied particle physics. Therein lie the answers to many mysteries; and the edge of knowledge.
Learning about particle physics:

Feynman.

Easy to read, but read slowly and think about it.

Talk about expanding your mind - reading these lectures will make your head twice as big as it is now without the headache.

feynmanlectures.caltech.edu
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