منابع مشابه
Instanton-Induced Interactions in Finite Density QCD
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In supersymmetric QCD with SU(Nc) gauge group and Nf flavors, it is known that instantons generate a superpotential if Nf = Nc−1 and deform the moduli space of vacua if Nf = Nc. But the role of instantons has been unclear for Nf > Nc. In this paper, we demonstrate that for Nf > Nc, on the moduli space of vacua, instantons generate a more subtle chiral operator containing (for example) non-deriv...
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A Coulomb gas representation of dense-matter QCD is derived from a dual transformation of the low-energy effective Lagrangian. The point-like charges Q = ±1 of the gas are identified with the instantons and anti-instantons of such topological charges. An instanton repels another instanton with the same force as it attracts an anti-instanton, in contrast to the semiclassical interaction.
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We analyze multi-instanton sector in two dimensional U(N) Yang-Mills theory on a sphere. We obtain a contour intregral representation of the multiinstanton amplitude and find “neutral” configurations of the even number instantons are dominant in the large N limit. Using this representation, we calculate the 1,2,3,4 bodies interactions and the free energies for N = 3, 4, 5 numerically and find t...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2020
ISSN: 1029-8479
DOI: 10.1007/jhep01(2020)074