American theoretical physicist

An American theoretical physicist is a scientist based in the United States who develops mathematical models and theories to understand the fundamental principles of nature. They explore questions about the behavior of particles, forces, and the universe itself—such as the nature of space and time, quantum mechanics, or gravity—using abstract concepts and calculations rather than experiments alone. Their work often advances our understanding of reality at the deepest levels and can lead to technological innovations. Renowned examples include scientists like Richard Feynman and Kip Thorne, who contributed significantly to our understanding of quantum physics and gravitational waves.