Full Idea
Physical or nomological necessity is the truth of a sentence in all logically possible worlds governed by our actual laws of nature.
Gist of Idea
Nomological necessity is truth in all logically possible worlds with our laws
Source
Robert Hanna (Rationality and Logic [2006], 6.6)
Book Reference
Hanna,Robert: 'Rationality and Logic' [MIT 2006], p.196
A Reaction
Personally I think 'natural necessity' is the best label for this, as it avoids firm commitment to reductive physicalism, and it also avoids commitment to actual necessitating laws.