通过粒子发射、波散射和测地线探索幻影狄拉克-玻恩-因费尔德正则黑洞
Exploring a phantom Dirac-Born-Infeld regular black hole via particle emission, wave scattering and geodesics
AI总结：
本文研究幻影狄拉克-玻恩-因费尔德正则黑洞的粒子发射、波散射与测地线特性，分析其热谱、吸收截面、散射相移及轨迹偏转规律，揭示正则核对黑洞演化的影响。
AI中文摘要：
我们研究由幻影狄拉克-玻恩-因费尔德（phantom Dirac-Born-Infeld）场支撑的渐近平坦正则黑洞中的粒子产生、蒸发、标量波吸收与散射，以及测地线运动。对于无质量玻色子和费米子场，Bogoliubov变换给出热谱，其霍金温度随正则核的凸显程度增加而降低。能量守恒隧穿在低能极限下得到相同温度，而反冲和DBI贡献引入非热修正并抑制粒子发射。在高频区域，截面的增大无法补偿温度的降低，导致光度更低、蒸发时间更长。数值分波分析表明，总标量吸收随正则核尺度增大而增加，在低频时趋近视界面积，在高频时围绕增大的几何捕获极限振荡。散射相移非均匀地修改多极振幅，并将干涉条纹移向更大角度。此外，类光和类时轨迹均随正则核贡献的增加而经历更强的偏转。
英文摘要：
We examine particle creation, evaporation, scalar wave absorption and scattering, and geodesic motion in the asymptotically flat regular black hole supported by a phantom Dirac-Born-Infeld field. For massless bosonic and fermionic fields, the Bogoliubov transformations yield thermal spectra whose Hawking temperature decreases as the regular core becomes more prominent. Energy-conserving tunneling recovers the same temperature in the low-energy limit, whereas recoil and the DBI contribution introduce nonthermal corrections and suppress particle emission. In the high-frequency regime, the enlargement of the cross section does not compensate for the reduction in temperature, resulting in a lower luminosity and a longer evaporation time. A numerical partial wave analysis shows that the total scalar absorption increases with the regular core scale, approaches the horizon area at low frequencies, and oscillates around an enlarged geometric capture limit at high frequencies. The scattering phase shifts modify the multipolar amplitudes nonuniformly and displace the interference fringes toward larger angles. Furthermore, both null and timelike trajectories experience stronger deflection as the regular core contribution increases.
