Moduli space of BPS walls in supersymmetric gauge theories

Norisuke Sakai, Yisong Yang

Research output: Contribution to journalArticlepeer-review


Existence and uniqueness of the solution are proved for the 'master equation' derived from the BPS equation for the vector multiplet scalar in the U(1) gauge theory with N F charged matter hypermultiplets with eight supercharges. This proof establishes that the solutions of the BPS equations are completely characterized by the moduli matrices divided by the V-equivalence relation for the gauge theory at finite gauge couplings. Therefore the moduli space at finite gauge couplings is topologically the same manifold as that at infinite gauge coupling, where the gauged linear sigma model reduces to a nonlinear sigma model. The proof is extended to the U(N C) gauge theory with N F hypermultiplets in the fundamental representation, provided the moduli matrix of the domain wall solution is U(1)-factorizable. Thus the dimension of the moduli space of U(N C) gauge theory is bounded from below by the dimension of the U(1)-factorizable part of the moduli space. We also obtain sharp estimates of the asymptotic exponential decay which depend on both the gauge coupling and the hypermultiplet mass differences.

Original languageEnglish (US)
Pages (from-to)783-800
Number of pages18
JournalCommunications In Mathematical Physics
Issue number3
StatePublished - Nov 2006

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


Dive into the research topics of 'Moduli space of BPS walls in supersymmetric gauge theories'. Together they form a unique fingerprint.

Cite this