Vitaly Ginzburg, a Nobel prize-winning Russian physicist and one of the fathers of Soviet hydrogen bomb, has died in Moscow. He was 93.

The Russian Academy of Sciences says Ginzburg died late Sunday of a cardiac arrest.

He won the 2003 Nobel Prize in physics for his contribution to theories on superconductivity, the ability of some materials to conduct electricity without resistance.

In the early 1950s, Ginzburg was part of the Soviet government's hydrogen bomb program.

Ginzburg strongly opposed the growing role of Russian Orthodox Church in state affairs after the Soviet collapse, protesting its attempts to have a say in political and secular matters and introduce religious lessons in schools.

He also criticized the post-Soviet government's apparent indifference to basic scientific research.