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Studying Boojums in N=2 Theory with Walls and Vortices

R. Auzzi·M. Shifman·A. Yung
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Abstract

We study 1/2 BPS domain walls, 1/2 BPS flux tubes (strings) and their 1/4 BPS junctions. We consider the simplest example of N=2 Abelian gauge theory with two charged matter hypermultiplets which contains all of the above-listed extended objects. In particular, we focus on string-wall junctions (boojums) and calculate their energy. It turns out to be logarithmically divergent in the infrared domain. We compute this energy first in the (2+1)-dimensional effective theory on the domain wall and then, as a check, obtain the same result from the point of view of (3+1)-dimensional bulk theory. Next, we study interactions of boojums considering all possible geometries of string-wall junctions and directions of the string magnetic fluxes.

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R. Auzzi, M. Shifman, A. Yung. 2005-04-27. Studying Boojums in N=2 Theory with Walls and Vortices. https://doi.org/10.1103/physrevd.72.025002

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