منابع مشابه
Instanton size distribution in O(3).
We present calculations of the size distribution of instantons in the 2d O(3) non-linear σ model, and briefly discuss the effects cooling has upon the configurations and the topological objects.
متن کاملDistribution of Instanton Sizes in a Simplified Instanton Gas Model
We investigate the distribution of instanton sizes in the framework of a simplified model for ensembles of instantons. This model takes into account the non-diluteness of instantons. The infrared problem for the integration over instanton sizes is dealt with in a self-consistent manner by approximating instanton interactions by a repulsive hard core potential. This leads to a dynamical suppress...
متن کاملDistribution of Instanton and Monopole Clustering
We study the relation between the instanton distribution and the monopole loop length in the SU(2) gauge theory with the abelian gauge fixing. We measure the monopole current from the multiinstanton ensemble on the 16 lattice using the maximally abelian gauge. When the instanton density is dilute, there appear only small monopole loops. On the other hand, in the dense case, there appears one ve...
متن کاملQuark distribution in the pion within the instanton liquid model
The leading-twist valence-quark distribution function in the pion is obtained at a low normalization scale of an order of the inverse average size of an instanton ρc. The momentum dependent quark mass and the quark-pion vertex are constructed in the framework of the instanton liquid model, using a gauge invariant approach. The parameters of instanton vacuum, the effective instanton radius and q...
متن کاملQuark Distribution Function in Pion within Instanton Liquid Model
We calculate the leading-twist valence-quark distribution function in the pion at a low normalization scale of an order of the inverse average size of an instanton ρc. The quark-pion dynamics and the construction of the quark-pion vertex function are considered in the framework of the instanton liquid model. The parameters of instanton vacuum, the effective instanton radius and quark mass, are ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.50.7570