Representations of the $SU(N)$ $T$-algebra and the loop representation in $1+1$-dimensions

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

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15 pages, LaTeX, 1 postscript figure included, uses epsf.sty, G\"oteborg ITP 93-39

Scientific paper

10.1088/0264-9381/11/7/005

We consider the phase-space of Yang-Mills on a cylindrical space-time ($S^1 \times {\bf R}$) and the associated algebra of gauge-invariant functions, the $T$-variables. We solve the Mandelstam identities both classically and quantum-mechanically by considering the $T$-variables as functions of the eigenvalues of the holonomy and their associated momenta. It is shown that there are two inequivalent representations of the quantum $T$-algebra. Then we compare this reduced phase space approach to Dirac quantization and find it to give essentially equivalent results. We proceed to define a loop representation in each of these two cases. One of these loop representations (for $N=2$) is more or less equivalent to the usual loop representation.

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