🔬 physics

A Causal Memory-Kernel Response Framework for Weak-Field Gravity: Trace Projection, Local Limits, and Phenomenological Constraints

This paper proposes a constrained low-energy causal memory-kernel framework for weak-field gravity that separates scalar trace projections from full tensor responses to incorporate historical dependence and memristive-like structures while remaining consistent with standard General Relativity limits and phenomenological observational bounds.

Mingde Yang2026-06-30✓ Author reviewed
🔬 physics

A Cycling Spacecraft for Harvesting Antimatter from the Sun: Magnetic-Funnel Capture, Species-Selective Trapping, and a Laser-Propelled Sun–Earth Service Architecture (v4)

This paper presents version 4 of a laser-propelled, cycling spacecraft architecture that utilizes an expanded high-temperature superconducting magnetic funnel and advanced species-selective trapping to harvest microgram-scale quantities of solar positrons for delivery to an Earth-orbiting storage station, acknowledging that current yields remain research-grade rather than energy-grade.

Hasan Börekci2026-06-30
🔬 physics

Toward a Measurement of Stellar Oxygen Formation with the Warsaw Active Target TPC Operating in Gamma Beams

This paper reports a significantly improved, background-free measurement of the 12C(α,γ)16O reaction using the Warsaw electronic-readout TPC in a gamma beam, which successfully validates quantum mechanical predictions for E1–E2 interference and paves the way for extrapolating the cross section to stellar energies.

Kristian Haverson, Mikołaj Ćwiok, Wojciech Dominik, Aleksandra Fijałkowska, Mateusz Fila, Zenon Janas, Artur Kalinowski (…)2026-06-30