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gr-qc2026
Quantum Matter Makes Lightcones Quantum
Tomohiro Fujita, Misao Sasaki
In gravitational physics, matter does not merely move within spacetime; it also determines the light cones that define causal relations. What happens when the matter that determine…
hep-th2026
A Unified Fermionic Origin for Density-Driven Waterfall Inflation and its Multi-Messenger Signatures
Stephon Alexander, Pisin Chen, Jinglong Liu +3
Inflation is conventionally described by fundamental scalar fields whose microscopic origin remains unknown. We propose a different mechanism in which inflation emerges from fermio…