Studying boojums in N=2 theory with walls and vortices

R. Auzzi, M. Shifman, A. Yung

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We study 1/2 Bogomol'nyi-Prasad-Sommerfield (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.

Original languageEnglish (US)
Article number025002
Pages (from-to)1-10
Number of pages10
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number2
StatePublished - Jul 15 2005


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