Academic research is very different to researching a science fiction novel.
The best sf comes from the edge of current understanding, where there tend, unfortunately, to be no helpful popular overviews. Every so often objections are raised about the physical plausibility of this scenario. For instance, recently Stephen Hawking pointed out that any time-bridging wormhole would quickly suffer a catastrophic energy leakage, caused by radiation feeding back on itself through the wormhole. So the physicists keep on coming up with plausible ways to construct time tunnels, and their main problem is how to resolve the consequent granny-strangling causality paradoxes. Unfortunately for me and H.G., however, a constraint of researching sf is that the science has to fit the fiction.