2021/04/07 by Fei He, He, Fei, Ka-Di Zhu +1 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Condensed matter physics #FOS: Physical sciences #Fermi Gamma-ray Space Telescope #High Energy Physics - Phenomenology (hep-ph) #Neutron #Nuclear Physics and Applications #Nuclear Theory (nucl-th) #Nuclear physics #Optics #Physics #Purcell effect #Quantum Physics (quant-ph) #Quantum, superfluid, helium dynamics #Radiation #Spontaneous emission #Ultracold neutrons #hep-ph #nucl-th #quant-ph
paper · pdf · doi:10.48550/arxiv.2104.02931
arxiv created 2021/04/07 · openalex publication_date 2021/04/07 · arxiv updated 2021/04/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Purcell effect predicts that spontaneous radiation is not an intrinsic property of matter, but is affected by the environment in which it is located, and is the result of the interaction of matter and field. Purcell effect can be inferred from Fermi Gold rule through strict quantum electrodynamics (QED), and through it can achieve the enhancement or suppression of radiation. We suggest that, in principle, the Purcell effect can be detected at the percentage level of neutron decay in experiments with trapped ultra-cold neutrons. As a test of our claim, we propose a currently achievable experimental protocol that can detect whether Purcell effect has occurred in an trapped ultra-cold neutron lifetime measurement experiment. Finally, we discuss the discrepancy in current methods of measuring neutron lifetime, which may be caused by different experimental setups.