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 Talk:Identical particles - Wikipedia, the free encyclopedia

Talk:Identical particles

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This has profound implications for thermodynamics. Suppose you have two coins which are not identical. The probability of finding the coins in heads-tails is one in two, while the probability of finding the coints in heads-heads or tails-tails in one in four. If the coins are identical, then the probability of finding the coins in heads-heads, tails-tails, or heads-tails is one in three. Since the thermodynamic properties of a material are determined by the probability of particles being at a certain energy, the assertion of identical particles has some very noticable impacts.

I removed this paragraph, as I have doubts about it. Could whoever wrote it please explain in greater detail? I do not find it useful, because coins (like all macroscopic objects) are not identical. Also, I do not understand what you mean by "flipping" identical coins.

Rewrote the paragraph. I'm basically trying to paraphrase the discussion of quantum statistics in Kittel and Kromer's *Thermal Physics*. The basic point is that the concept of identical particles has some profound macroscopic consequences. The discussion is for bosons. It would be nice to include a section of the implications of antisymmetry on fermions.

The Pauli exclusion principle doesn't always work, according to my quantum textbook. See my discussion in talk:Pauli exclusion principle. -- Tim Starling

Is there any experimental evidence for the existence of plektons (which if I'm not mistaken are anyon-like solutions for non-Abelian gauge fields)? If not, the article should mention that they are hypothetical particles, whereas the existence of anyons is pretty well-confirmed by experiments on the fractional quantum Hall effect. -- CYD

I honestly don't know if plektons have been experimentally observed so far (anyone knows?), but they certainly are a very important theoretical possibility. Phys 12:16, 22 Aug 2003 (UTC)

[edit] question

this sounds really stupid but i dont understand how fermions can be identical, like electrons can differ in their momentum uncertainty and spin, that make them difference, doesnt it?

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STATIC WIKIPEDIA JUNE 2008 on wikipedia2006.classicistranieri.com

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STATIC WIKIPEDIA MARCH 2008 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA APRIL 2007 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA DECEMBER 2006 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA NOVEMBER 2006 on wikipeda2006classicistranieri.com
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