It's possible you're thinking of:
* Quantum physics: This is a branch of physics that studies the behavior of matter and energy at the atomic and subatomic levels. It deals with phenomena like wave-particle duality, superposition, and entanglement.
* Quantum mechanics: This is the theoretical framework that underlies quantum physics, providing a mathematical description of these phenomena.
If you can provide more context or information about what you're looking for, I may be able to help you better.
