Classical and Quantum Fermions Linked by an Algebraic Deformation
Mostafazadeh, Ali
arXiv, 0312065 / Harvested from arXiv
We study the regular representation $\rho_\zeta$ of the single-fermion algebra ${\cal A}_\zeta$, i.e., $c^2=c^{+2}=0$, $cc^++c^+c=\zeta~1$, for $\zeta\in [0,1]$. We show that $\rho_0$ is a four-dimensional nonunitary representation of ${\cal A}_0$ which is faithfully irreducible (it does not admit a proper faithful subrepresentation). Moreover, $\rho_0$ is the minimal faithfully irreducible representation of ${\cal A}_0$ in the sense that every faithful representation of ${\cal A}_0$ has a subrepresentation that is equivalent to $\rho_0$. We therefore identify a classical fermion with $\rho_0$ and view its quantization as the deformation: $\zeta:0\to 1$ of $\rho_\zeta$. The latter has the effect of mapping $\rho_0$ into the four-dimensional, unitary, (faithfully) reducible representation $\rho_1$ of ${\cal A}_1$ that is precisely the representation associated with a Dirac fermion.
Publié le : 2003-12-24
Classification:  Mathematical Physics
@article{0312065,
     author = {Mostafazadeh, Ali},
     title = {Classical and Quantum Fermions Linked by an Algebraic Deformation},
     journal = {arXiv},
     volume = {2003},
     number = {0},
     year = {2003},
     language = {en},
     url = {http://dml.mathdoc.fr/item/0312065}
}
Mostafazadeh, Ali. Classical and Quantum Fermions Linked by an Algebraic Deformation. arXiv, Tome 2003 (2003) no. 0, . http://gdmltest.u-ga.fr/item/0312065/