It is now established that the non-renormalization theorems are violated by non-perturbative
effects in many four-dimensional supersymmetric theories, and that dynamical …

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 …

We study N= 1 supersymmetric gauge theories coupled with higher derivative chiral models
in four dimensions in the off-shell superfield formalism. We solve the equation of motion for …

When global symmetries are spontaneously broken in supersymmetric vacua, there appear
quasi-Nambu-Goldstone (NG) fermions as superpartners of NG bosons. In addition to these …

Possible topological solitons (skyrmions) of four-dimensional supersymmetric nonlinear σ-
models are investigated. The requirements of supersymmetry limit our study to the CP 1 …

Within a four dimensional manifestly N= 1 supersymmetric action, we show that Wess-
Zumino-Novikov-Witten (WZNW) terms can be embedded in an extraordinarily simple …

A bstract We present for the first time a ghost-free higher-derivative chiral model with a
propagating auxiliary F-term field (highest component of the chiral multiplet). We obtain this …

Within a four-dimensional N= 1 superspace, we present a new ansatz for the Skyrme term
and for the gauged WZNW term embedded into a superaction. We use the new chiral-non …

A bstract We investigate three-form gauge theories with higher derivative interactions and
their supersymmetric extensions in four space-time dimensions. For the bosonic three-form …

We show how to systematically construct higher-derivative terms in effective actions in
harmonic superspace despite the infinite redundancy in their description due to the infinite …