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arXiv · hep-th/9410105

Leading Large N Modification of QCD_2 on a Cylinder by Dynamical Fermions

Avinash Dhar·Gautam Mandal·Spenta R. Wadia
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Abstract

We consider 2-dimensional QCD on a cylinder, where space is a circle. We find the ground state of the system in case of massless quarks in a $1/N$ expansion. We find that coupling to fermions nontrivially modifies the large $N$ saddle point of the gauge theory due to the phenomenon of `decompactification' of eigenvalues of the gauge field. We calculate the vacuum energy and the vacuum expectation value of the Wilson loop operator both of which show a nontrivial dependence on the number of quarks flavours at the leading order in $1/N$.

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Avinash Dhar, Gautam Mandal, Spenta R. Wadia. 1994-10-10. Leading Large N Modification of QCD_2 on a Cylinder by Dynamical Fermions. https://doi.org/10.1016/0550-3213(94)00535-m

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