Preprint Examines Inflationary Production of Ultralight Vector Dark Matter

A new preprint on arXiv investigates the impact of finite-duration non-slow-roll phases on the inflationary production of ultralight vector dark matter. The study, accepted by Physical Review D, uses a smooth profile to address ultraviolet ringing and derives a momentum-response kernel. Findings suggest this approach preserves infrared enhancement and modifies relic abundance, advancing theoretical understanding of dark matter origins.