Dissolved deconfinement: Phase structure of large N gauge theories with fundamental matter
- Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, B.C. V6T 1Z1 (Canada)
A class of large N U(N) gauge theories on a compact manifold S{sup 3}xR (with possible inclusion of adjoint matter) is known to show first-order deconfinement transition at the deconfinement temperature. This includes the familiar example of pure YM theory and N=4 Supersymmetric Yang-Mills theory. Here we study the effect of introduction of N{sub f} fundamental matter fields in the phase diagram of the above mentioned gauge theories at small coupling and in the limit of large N and finite N{sub f}/N. We find some interesting features like the termination of the line of first-order deconfinement phase transition at a critical point as the ratio N{sub f}/N is increased and absence of deconfinement transition thereafter (there is only a smooth crossover). This result may have some implication for QCD, which unlike a pure gauge theory does not show a first-order deconfinement transition and only displays a smooth crossover at the transition temperature.
- OSTI ID:
- 21250543
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 4; Other Information: DOI: 10.1103/PhysRevD.78.045012; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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