8 papers
Linear and Nonlinear Supersymmetries
Jonathan Bagger, Alexander Galperin
In this talk we use nonlinear realizations to study the spontaneous partial breaking of rigid and local supersymmetry.
The tensor Goldstone multiplet for partially broken supersymmetry
Jonathan Bagger, Alexander Galperin
We show that the tensor gauge multiplet of N=1 supersymmetry can serve as the Goldstone multiplet for partially broken rigid N=2 supersymmetry. We exploit a remarkable analogy with…
New Goldstone multiplet for partially broken supersymmetry
Jonathan Bagger, Alexander Galperin
The partial spontaneous breaking of rigid N=2 supersymmetry implies the existence of a massless N=1 Goldstone multiplet. In this paper we show that the spin-(1/2,1) Maxwell multipl…
Supersymmetric sigma models and the 't Hooft instantons
A. Galperin, E. Sokatchev
Witten's linear sigma model for ADHM instantons possesses a natural supersymmetry. We study generalizations of the infrared limit of the model that are invariant under $(4,…
Manifest supersymmetry and the ADHM construction of instantons
A. Galperin, E. Sokatchev
We present the (0,4) superspace version of Witten's sigma model construction for ADHM instantons. We use the harmonic superspace formalism, which exploits the three complex structu…
Matter couplings in partially broken extended supersymmetry
J. Bagger, A. Galperin
We use nonlinear realizations to describe the spontaneous breaking of supersymmetry to in four dimensions. We identify the Goldstone multiplet with an chiral supe…