Talk:Fermionic condensate

message: What happened here?  The version from July seems much clearer than the current version.  +sj+ 10:48, 6 Sep 2004 (UTC)

message: ===The BCS theory===
The BCS theory of superconductivity has a fermion condensate. A pair of electrons in a metal, with opposite spins can form a scalar bound state called a Cooper pair. Then, the bound states themselves form a condensate. Since the Cooper pair has electric charge, this fermion condensate breaks the electromagnetic gauge symmetry of a superconductor, giving rise to the wonderful electromagnetic properties of such states.
:Cooper pairs are however bosons (spin 0) not fermions even thought they are composed of fermions, therefore this doesnt fit in this article. I'm a chemist not a physicist so I might be wrong with this, any suggestions? Azo bob 13:38, 20 June 2007 (UTC)
replies: text: All fermionic condensates must by necessity be effective bosons, since otherwise Pauli exclusion would prevent the condensation of the matter 93.21.100.12 (talk) 04:31, 22 March 2012 (UTC)
thread_title: Examples

message: The BCS theory of superconductivity has a fermion condensate. A pair of electrons in a metal, with opposite spins can form a scalar bound state called a Cooper pair. Then, the bound states themselves form a condensate. Since the Cooper pair has electric charge, this fermion condensate breaks the electromagnetic gauge symmetry of a superconductor, giving rise to the wonderful electromagnetic properties of such states.
:Cooper pairs are however bosons (spin 0) not fermions even thought they are composed of fermions, therefore this doesnt fit in this article. I'm a chemist not a physicist so I might be wrong with this, any suggestions? Azo bob 13:38, 20 June 2007 (UTC)
replies: text: All fermionic condensates must by necessity be effective bosons, since otherwise Pauli exclusion would prevent the condensation of the matter 93.21.100.12 (talk) 04:31, 22 March 2012 (UTC)
thread_title: The BCS theory

message: I noticed that chiral condensate redirects to this article, but there was no mention of chiral condensates here at all: the article discussed only the recent work on atomic condensates.  So I've taken a stab at re-adding the material from the other article given above, with some reduction in sophistication along the way.  The article may be a bit repetative now, but at least it's a step closer to being complete.  (If you'd rather keep this article focused exclusively on the recent atomic condensate work, then the other material really needs to have its own article, too.)  Oh, and I added an expert-needed template, because I don't have the time to do all the necessary cleanup myself (nor expertise in the full range of topics covered).--Steuard 23:45, 26 May 2006 (UTC)
thread_title: Re-added some material

message: Cooper pairs are bosons (spin 0) not fermions even thought they are composed of fermions, therefore how can this be said to be a fermionic condensate, due to the Pauli Principle (and therefore by extension the exclusion principle) surely a condensate of individual fermions could not exist. I'm a chemist not a physicist so I might be wrong with this, any suggestions? Azo bob 13:38, 20 June 2007 (UTC)
replies: text: When one talks about fermionic condensates in physics one always keeps in mind that the fermions form pairs that are bosonic and which then consequently can form the condensate. --EbbeSand (talk) 14:27, 7 June 2010 (UTC)
thread_title: Validity of the arguements of this article

message: Aside from very limited sourcing for the entire article, the term "fermionic atom" is thrown about as though it were well defined in physics texts.  I wasn't aware that alkali atoms obeyed the Pauli exclusion principle - where is this behavior demonstrated?  Or, is there a more poetic origin for this term?  As central to the entire article, this term should be well-sourced, or somehow qualified. Wikibearwithme (talk) 08:44, 5 June 2017 (UTC)
thread_title:  Not seeing any rigorous definition of what a "fermionic atom" is 

message: The article states that the theory of superfluid He-3 is more complicated than the BCS theory for superconductors due to the stronger interaction between the atoms. Is this really true? I mean electrons have a Coulomb repulsion among each other which is absent for the atoms (I know that the electrons in a Fermi liquid do not feel much of this repulsion though). I think the theory for He-3 is more complicated because the pairs there do not form pairs with spin 0 as in a Cooper pair, so one deals with a kind of triplet superconductivity which makes live more complicated (but also more rich). --EbbeSand (talk) 14:30, 7 June 2010 (UTC)
thread_title: Helium 3 condensate

message: Atoms are fermions. Isn’t the whole point of Bose-Einstein condensates, that it’s fermionic atoms, behaving like bosons? So it’s really wrong, to say that a BEC is made of bosonic stuff, while only a fermionic condensate is made of fermions. — 84.44.251.155 (talk) 22:35, 19 November 2014 (UTC)
thread_title:  What the hell are “bosonic atoms”? 

message: Is the trick that a pair of fermions might have an energy of 5 in 1 fermion and 6 in the other so that the total energy is 11, while another might have 4 and 7, which also make 11? 32ieww (talk) 03:08, 1 February 2017 (UTC)
thread_title:  Fermion pairs 

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thread_title:  External links modified