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arXiv 1507.00633gr-qchep-th
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$f(R)$引力模型中静态黑洞对粒子的加速

Particle Acceleration by Static Black Holes in a Model of $f(R)$ Gravity

M. Halilsoy, A. Ovgun

摘要:

粒子碰撞在由$f(R)=R+2α\sqrt{R}$描述的$f(R)$引力的上下文中被考虑,其中$R$代表Ricci标量,并且$α$是非零常数。考虑了在裸奇点/视界附近沿径向相向运动的对撞粒子的质心能量。粒子在事件视界附近同向碰撞产生有限的能量,而相反运动的粒子的能量则无限增长。增加一个宇宙学常数并不改变这个特征。一个无质量的出射光子与一个下落粒子的碰撞和两个沿零测地线反向运动的光子的碰撞也被考虑在内。

英文摘要:

Particle collisions are considered within the context of $f(R)$ gravity described by $f(R)=R+2α\sqrt{R}$, where $R$ stands for the Ricci scalar and $α$ is a non-zero constant. The center of mass (CM) energy of head-on colliding particles moving in opposite radial directions near the naked singularity/horizon are considered. Collision of particles in the same direction near the event horizon yields finite energy while the energy of oppositely moving particles grows unbounded. Addition of a cosmological constant does not change the feature. Collision of a massless outgoing photon with an infalling particle and collision of two oppositely moving photons following null-geodesics are also taken into account.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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