BPS States in Supersymmetric Chiral Models with Higher Derivative Terms

Jun 30, 2014
13 pages
Published in:
  • Phys.Rev.D 90 (2014) 10, 105001
  • Published: Nov 3, 2014
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Abstract: (APS)

We study the higher derivative chiral models with four supercharges and Bogomol’nyi–Prasad–Sommerfield (BPS) states in these models. The off-shell Lagrangian generically includes higher powers of the auxiliary fields F, which causes distinct on-shell branches associated with the solutions to the auxiliary fields equation. We point out that the model admits a supersymmetric completion of arbitrary higher derivative bosonic models of a single complex scalar field, and an arbitrary scalar potential can be introduced even without superpotentials. As an example, we present a supersymmetric extension of the Faddeev–Skyrme model without four time derivatives, in contrast to the previously proposed supersymmetric Faddeev–Skyrme-like model containing four time derivatives. In general, higher derivative terms together with a superpotential result in deformed scalar potentials. We find that higher derivative corrections to 1/2 BPS domain walls and 1/2 BPS lumps are exactly canceled out, while the 1/4 BPS lumps (as compact baby Skyrmions) depend on a characteristic feature of the higher derivative models. We also find a new 1/4 BPS condition for domain wall junctions, which generically receives higher derivative corrections.

Note:
  • 28 pages, 3 figures, references added, version published in Phys.Rev.D
  • 11.30.Pb
  • 11.27.+d
  • derivative: high
  • model: chiral
  • correction: derivative
  • domain wall: BPS
  • supersymmetry
  • superpotential
  • field equations
  • supercharge