BPS Lumps and Their Intersections in N = 2 SUSY Nonlinear Sigma Models
نویسندگان
چکیده
BPS lumps in N = 2 SUSY nonlinear sigma models on hyper-Kähler manifolds in four dimensions are studied. We present new lump solutions with various kinds of topological charges. New BPS equations and a new BPS bound, expressed by the three complex structures on hyper-Kähler manifolds, are found. We show that any states satisfying these BPS equations preserve 1/8 (1/4) SUSY of N = 2 SUSY nonlinear sigma models with (without) a potential term. These BPS states include nonparallel multi-(Q-)lumps. e-mail address: [email protected] e-mail address: [email protected] ‡ Address after September 1, Department of Physics, West Lafayette, IN 47907-1396, USA. e-mail address: [email protected]
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