Slope of the topological susceptibility at zero temperature and finite temperature in the Nambu-Jona-Lasinio model

Details Slope of the topological susceptibility at zero temperature and finite temperature in the Nambu-Jona-Lasinio model Slope of the topological susceptibility at zero temperature and finite temperature in the Nambu-Jona-Lasinio model

2001-05-25

arxiv.org/abs/hep-ph/0105264v1

Phys.Lett.B514:200-203,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 3 figures, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)00778-X

We estimate the slope of the topological susceptibility in the three flavour Nambu-Jona-Lasinio model with the 't Hooft interaction. The results are consistent with the evaluation from the QCD sum rule in favour of the full topological susceptibility. We apply it to the Shore-Veneziano formula to find that it shows satisfactory agreement with the anomalous suppression of the flavour-singlet axial charge. The behaviour at finite temperature is also discussed.

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