Field Theory via Higher Geometry II: Thickened Smooth Sets as Synthetic Foundations

The article title suggests a highly technical and specialized topic in theoretical physics and mathematics. The use of terms like "Field Theory," "Higher Geometry," and "Synthetic Foundations" indicates a focus on advanced concepts and potentially abstract mathematical frameworks. The "II" suggests this is part of a series, implying prior work and a specific context. The mention of "Thickened Smooth Sets" hints at a novel approach or a specific mathematical object being investigated.