Acceleration radiation of a two-level atom freely falling into a nonsingular black hole with holonomy corrections

Abstract In this study, we examine a two-level atom freely falling into an effective model of a static, spherically symmetric, nonsingular black hole with holonomy corrections. The quantum correction parameter produces black hole remnants as the size approaches the horizon. In the system, the atom interacts with a massless scalar photon through a Boulware-like vacuum. We discuss how quantum corrections affect the form of the atom’s excitation and absorption probabilities. We find that the excitation probability decreases with increasing quantum correction parameter, whereas the absorption probability increases. We confirm that the Einstein equivalence principle holds for such a system, as expected. We also examined the behavior of the modified horizon brightened acceleration radiation under holonomy corrections. We recover the standard Hawking temperature and Hawking–Bekeinstein entropy when holonomy corrections vanish.