Bronnikov K A, Fabris J C
Center for Gravitation and Fundamental Metrology, VNIIMS, 46 Ozyornaya Street, Moscow 119361, Russia.
Phys Rev Lett. 2006 Jun 30;96(25):251101. doi: 10.1103/PhysRevLett.96.251101. Epub 2006 Jun 27.
We study self-gravitating, static, spherically symmetric phantom scalar fields with arbitrary potentials (favored by cosmological observations) and single out 16 classes of possible regular configurations with flat, de Sitter, and anti-de Sitter asymptotics. Among them are traversable wormholes, bouncing Kantowski-Sachs (KS) cosmologies, and asymptotically flat black holes (BHs). A regular BH has a Schwarzschild-like causal structure, but the singularity is replaced by a de Sitter infinity, giving a hypothetic BH explorer a chance to survive. It also looks possible that our Universe has originated in a phantom-dominated collapse in another universe, with KS expansion and isotropization after crossing the horizon. Explicit examples of regular solutions are built and discussed. Possible generalizations include k-essence type scalar fields (with a potential) and scalar-tensor gravity.
我们研究具有任意势（受宇宙学观测青睐）的自引力、静态、球对称幻标量场，并挑选出16类具有平坦、德西特和反德西特渐近线的可能正则构型。其中包括可穿越虫洞、反弹的坎托夫斯基 - 萨克斯（KS）宇宙学以及渐近平坦黑洞（BHs）。一个正则黑洞具有类似史瓦西的因果结构，但奇点被德西特无穷远所取代，这给假设的黑洞探索者一个存活的机会。我们的宇宙也有可能起源于另一个宇宙中由幻标量主导的坍缩，在穿越视界后经历KS膨胀和各向同性化。构建并讨论了正则解的具体例子。可能的推广包括k - 本质型标量场（具有势）和标量 - 张量引力。
