The CP(N-1) model on a Disc and Decay of a Non-Abelian String

A. Gorsky; A. Milekhin

doi:10.1103/physrevd.88.085017

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arXiv · 1306.3565

The CP(N-1) model on a Disc and Decay of a Non-Abelian String

A. Gorsky·A. Milekhin

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Abstract

We consider the role of quantum effects in the non-perturbative decay of non-abelian string with orientational moduli in non-supersymmetric D=4 gauge theory. To this aim the effective action in the $CP(N-1)$ model on a disc at large N has been calculated. It exhibits phase transition at some radius, the "wrong sign" Luscher term and large boundary boojum-like negative contribution. The effect of $\theta$ - term and the possibility of the spontaneous creation of the non-abelian string are briefly discussed.

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BibTeX RIS

A. Gorsky, A. Milekhin. 2013-06-15. The CP(N-1) model on a Disc and Decay of a Non-Abelian String. https://doi.org/10.1103/physrevd.88.085017

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