[spiralx]

Stephen Baxter's books are along the same lines, start with one of these:

https://en.wikipedia.org/wiki/Timelike_Infinity

https://en.wikipedia.org/wiki/Time_(Baxter_novel)

[gpderetta]

The only think I have read of Baxter is his short story Last Contact[1], but I still think about it very often. Reading the Xeele sequence is in my todo list.

[1] https://en.wikipedia.org/wiki/Last_Contact