论文标题
黑洞和虫洞的标量散射
Scalar scattering by black holes and wormholes
论文作者
论文摘要
我们研究了单色平面标量波在几何形状中的散射，该几何形状在Schwarzschild溶液，常规的黑洞和可穿越的虫洞空位之间插值。我们采用部分波的方法来计算常规黑洞的差分散射横截面以及虫洞溶液的差异。我们将完整的数值结果与经典的大地测量散射和荣耀近似进行了比较，在此类近似值的有效性方面获得了极好的一致性。我们获得常规黑洞案例的差分散射横截面与Schwarzschild的结果相似。尽管如此，虫洞的结果与黑洞的结果可能非常独特。特别是，我们表明，虫洞的差分散射横截面在大散射角度显着降低了共振频率。
We study the scattering of monochromatic planar scalar waves in a geometry that interpolates between the Schwarzschild solution, regular black holes and traversable wormhole spacetimes. We employ the partial waves approach to compute the differential scattering cross section of the regular black hole, as well as of the wormhole solutions. We compare our full numerical results with the classical geodesic scattering and the glory approximation, obtaining excellent agreement in the appropriate regime of validity of such approximations. We obtain that the differential scattering cross section for the regular black hole case is similar to the Schwarzschild result. Notwithstanding, the results for wormholes can be very distinctive from the black hole ones. In particular, we show that the differential scattering cross section for wormholes considerably decreases at large scattering angles for resonant frequencies.
