The Nelson-Seiberg theorem dictates conditions for the spontaneous breaking of supersymmetry in Wess–Zumino models with generic, possibly nonrenormalizable, superpotential; existence R-symmetry is necessary while sufficient. If we restrict ourselves to generic but renormalizable theories, however, there exist whose vacua break spontaneously preserving supersymmetry. classification and such exce...

This essay addresses the challenges of digital economy in context cybersecurity threats that have growing implications for national security. It analyzes cybersecurity-related exceptions to international trade rules explore whether and how these protect state's policy space. The argues pre-digital era are too narrowly framed address concerns. is contrast trends new generation agreements create ...