The phrase "among worlds" is correct and usable in written English.
It can be used in contexts discussing different realms, dimensions, or metaphorical spaces, often in literature or philosophical discussions.
Example: "The traveler found himself lost among worlds, each one more fantastical than the last."
Alternatives: "within realms" or "amidst universes".
I want him to feel comfortable moving among worlds, and different communities of people, at a moment in which cosmopolitanism is an endangered value.
Assuming likeness relations among worlds, the likeness of a proposition to the truth would seem to be some function of the likeness of worlds that make the proposition true to the actual world.
Here is what Lewis says: Humean Supervenience is meant to be contingent: it says that among worlds like ours, no two differ without difference in the arrangement of qualities.
Perhaps this one: Among worlds in which are instantiated no perfectly natural relations not actually instantiated, no two worlds differ with respect to what is true without differing with respect to the geometrical arrangement of spacetime points, or with respect to which perfectly natural properties are instantiated at those points.
On the usual understanding, a subjunctive of freedom counts as true provided that, among worlds in which its antecedent is satisfied, there is at least one in which the consequent is satisfied as well, and which is more similar to our world than any in which the consequent is not satisfied.
Keith moves seamlessly among worlds.
"The correlation among world markets is less than people think.
The program explores how global, regional, and domestic factors influence relations among world actors.
Twentieth-century Latin American fiction holds a prominent position among world literatures.
For Lévi-Strauss, Japan occupied a unique place among world cultures.
Students in the program explore how global, regional, and domestic factors influence relations among world actors.
