Action participants Diego Rubiera-García (UCM, Madrid, left photograph) and Gonzalo Olmo (IFIC, Valencia, right photograph) are among the winners of the Universe 2021 Best Paper Awards. The journal has selected their paper
Nonsingular Black Holes in ƒ (R) Theories
By: Gonzalo J. Olmo and Diego Rubiera-Garcia
Universe 2015, 1(2), 173–185
as one of the three winning papers, after a thorough evaluation of the originality and significance of the papers, citations, and downloads.
The authors explain about their work:
“The paper Nonsingular Black Holes in ƒ(R) Theories studies the structure of a family of static, spherically symmetric space-times generated by an anisotropic fluid and governed by a quadratic ƒ(R) theory. We found solutions that represent black holes with the central singularity replaced by a finite size wormhole, and showed that time-like geodesics and null geodesics with nonzero angular momentum never reach the wormhole throat due to an infinite potential barrier. For null radial geodesics, it takes an infinite affine time to reach the wormhole. This means that the resulting space-time is geodesically complete and, therefore, nonsingular despite the generic existence of curvature divergences at the wormhole throat.”
Our congratulations to both researchers!