Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-10-04
Nucl.Phys.B734:221-245,2006
Physics
High Energy Physics
High Energy Physics - Theory
34 pages
Scientific paper
10.1016/j.nuclphysb.2005.11.013
We present a complete solution of the WZW model on the supergroup GL(1|1). Our analysis begins with a careful study of its minisuperspace limit (``harmonic analysis on the supergroup''). Its spectrum is shown to contain indecomposable representations. This is interpreted as a geometric signal for the appearance of logarithms in the correlators of the full field theory. We then discuss the representation theory of the gl(1|1) current algebra and propose an Ansatz for the state space of the WZW model. The latter is established through an explicit computation of the correlation function. We show in particular, that the 4-point functions of the theory factorize on the proposed set of states and that the model possesses an interesting spectral flow symmetry. The note concludes with some remarks on generalizations to other supergroups.
Saleur Hubert
Schomerus Volker
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