Speaker
Description
Fundamental fields in the vicinity of black holes can exhibit rich phenomena that potentially yield astrophysically observable signatures. However, exploring these structures typically requires computationally intensive numerical calculations. In this work, we introduce a novel approach combining approximate solutions and a matching scheme to revisit the quasi-bound states of a massive Dirac field outside a Reissner–Nordström black hole. This new scheme enables a compact and unified analytical expression for the energy spectrum, which shows improved agreement with numerical results. Moreover, our findings highlight the critical role of long-lived quasi-bound states in shaping the late-time profile. Numerical verification confirms that this novel oscillatory tail follows a stretched exponential decay law of the form $e^{-\eta t^{1/3}}$. While this contribution eventually fades away in the true asymptotic regime, it may introduce crucial corrections to measurements performed over finite time intervals.
| 请选择分会 | 中微子物理、粒子天体物理与宇宙学 |
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