Physics – Mathematical Physics
Scientific paper
1998-12-02
J.Phys.A32:1115-1130,1999
Physics
Mathematical Physics
Latex,31 pages,no figures,to appear in J.Phys.A : Math.Gen
Scientific paper
10.1088/0305-4470/32/7/004
We study exclusion statistics within the second quantized approach. We consider operator algebras with positive definite Fock space and restrict them in a such a way that certain state vectors in Fock space are forbidden ab initio.We describe three characteristic examples of such exclusion, namely exclusion on the base space which is characterized by states with specific constraint on quantum numbers belonging to base space M (e.g. Calogero-Sutherland type of exclusion statistics), exclusion in the single-oscillator Fock space, where some states in single oscillator Fock space are forbidden (e.g. the Gentile realization of exclusion statistics) and a combination of these two exclusions (e.g. Green's realization of para-Fermi statistics). For these types of exclusions we discuss extended Haldane statistics parameters g, recently introduced by two of us in Mod.Phys.Lett.A 11, 3081 (1996), and associated counting rules. Within these three types of exclusions in Fock space the original Haldane exclusion statistics cannot be realized.
Meljanac Stjepan
Milekovic Marijan
Stojic Marko
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