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The strong coupling constant at small momentum as an instanton detector

 

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Author: Boucaud, Ph.
de Soto, F.
Le Yaouanc, A.
Leroy, J. P.
Micheli, J.
Moutarde, H.
Pène, Olivier
Rodríguez Quintero, J.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2003
Published in: Journal of High Energy Physics, 7 (4), 65-74.
Document type: Article
Abstract: We present a study of αMOM(p) at small p computed from the lattice in the quenched approximation (nf = 0). It shows a dramatic ∝ p4 law which can be understood within an instanton liquid model. In this framework the prefactor gives a direct measure of the instanton density in thermalised configurations. A preliminary result for this density is 5.27(4) fm-4
Cite: Boucaud, P., de Soto, F., Le Yaouanc, A., Leroy, J.P., Micheli, J., Moutarde, H.,...,Rodríguez Quintero, J. (2003). The strong coupling constant at small momentum as an instanton detector. Journal of High Energy Physics, 7 (4), 65-74.
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URI: http://hdl.handle.net/11441/63434

DOI: 10.1088/1126-6708/2003/04/005

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