https://doi.org/10.1140/epjc/s10052-025-14699-5
Regular Article - Theoretical Physics
Particle deflection around microscopic loop quantum black hole
School of Physics and Optoelectronics, South China University of Technology, 510641, Guangzhou, China
Received:
6
June
2025
Accepted:
29
August
2025
Published online:
8
September
2025
The detection of quantum gravity effects is highly limited in both macroscopic and microscopic scenarios: The small quantum parameter makes most large-scale observations practically indistinguishable from general relativity. While at the Planck scale, where the effect of quantum gravity is undoubtedly significant, the energy requirement is remarkably high for any test particle as a probe. In this work, by focusing on the inner-most stable circular orbit (ISCO) of both massless and massive particles around a microscopic loop quantum black hole, we show that given the current knowledge of ultra-high-energy particles, quantum corrections of relative scale 
can appear when the radius of the black hole horizon remains larger than the wavelength of high-energy Gamma rays, where the classical photon trajectory may still hold to a certain degree. In addition, more significant corrections can be observed when considering low-velocity massive test particles. Potentially, our results could suggest a new area for testing the effects of quantum gravity.
© The Author(s) 2025
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Funded by SCOAP3.
