2 papers
gr-qc2025
Particle Creation in a Cosmological Background in Analogy to the Schwinger Effect
Walter D. van Suijlekom, Michael F. Wondrak, Heino Falcke
We consider a gravitational analogue of the Schwinger effect in a cosmological context. While the Schwinger effect is usually attributed to a static electric background, its deriva…
math.OA2024
Higher K-groups for operator systems
Walter D. van Suijlekom
We extend our previous definition of K-theoretic invariants for operator systems based on hermitian forms to higher K-theoretical invariants. We realize the need for a positive par…