I find relation between physical and logical possibilities get interesting when an uncertainty ingredient is being introduced. Talking about many worlds, it was Kant who wondered whether God perhaps created the Universe in the shape of one single human hand. If it was so, then physicaly it is absolutely impossibile for the Universe to be both left and right and logicaly it is absolutely imposible to decide whether it is the left or the right one. If we take physical possibility to be concerned with actual existence (the Universe is actualy restricted to be one of the two, i.e. either the left or the right) and logical possibility to be concerned with absolute existence (there is an absolute uncertainty which of the two /logicaly posible/ Universes is actual) we see that absolute (logical) and actual (physical) existence "entangle" through the actuality of absolute uncertainty.

Same goes for rather naive conception that universal constants of nature might differ in magnitude in different worlds. Universal constants are finite and yet they are absolute. There are absolute limitations but there are no limits to absolutness. Say, the velocity of electromagnetic propagation is absolute and it can not be affected physicaly, it is beyond evrey causal history. The speed of this propagation is 300,000 km/sec meaning that it is finite and is measured as congruent with durations of other events in nature. However, please notice that different magnitude of universal constant of elctromagnetic propagation in some different world would entail measuring units in that world congruent with measuring units in our world. Since the measuring units in any world can be normalised to universal constatns of nature in that world, the congruency of measuring units of two different worlds renders itself impossible if the universal constants are to differ. Ergo, different worlds would be incommensurable and different magnitudes of universal constants just make no sense.