Spinning particle motion around black holes featuring primary scalar hair
Annals of Physics, cilt.494, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 494
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.aop.2026.170635
- Dergi Adı: Annals of Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, INSPEC, MathSciNet, zbMATH, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Earth, Atmospheric, & Aquatic Science Collection (ProQuest)
- İstanbul Üniversitesi Adresli: Evet
Özet
In this work, we examine the motion of spinning particles around black holes endowed with primary scalar hair. The dynamics of these test particles are studied using the Mathisson–Papapetrou–Dixon equations along with the supplementary Tulczyjew spin condition, while restricting the motion to the equatorial plane. We analyze the effective potential, the innermost stable circular orbit (ISCO) and explore their dependence on the model parameters and the particle's spin s. Moreover, we account for a superluminal bound arising from the non-parallelism of the particle's four-velocity and four-momenta, and we investigate how model parameters influence the maximum allowed spin smax. By studying collisions of spinning particles near the horizon, we determine the critical angular momentum required for a collision and compute the resulting center-of-mass energy Ecm, highlighting the impact of particle spin on these high-energy interactions.