Particle Physics
Dark Matter
Dark matter is a form of matter that does not interact with electromagnetic radiation, making it invisible to current detection methods. Its existence is inferred from gravitational effects on visible matter, such as the rotational speeds of galaxies and gravitational lensing.
Neutron
The neutron is an electrically neutral subatomic particle that, together with protons, forms atomic nuclei. It has a rest mass of 1.00866491595 u (≈ 939.565 MeV/c²) and a magnetic moment of –1.913 μN. Discovered by James Chadwick in 1932, free neutrons undergo beta decay with a mean lifetime of about 878 seconds.
Quantum Field Theory
Quantum Field Theory (QFT) is a fundamental theory in physics that provides a theoretical framework for understanding the subatomic world. It merges the principles of quantum mechanics with those of special relativity and classical field theory, positing that particles are excitations of underlying quantum fields rather than discrete objects. QFT is the foundation of the Standard Model of particle physics and has been successfully applied to condensed matter physics.
Quantum Physics
Quantum physics is a fundamental branch of physics that studies the behavior of matter and energy at the atomic and subatomic levels, introducing concepts such as wave-particle duality, superposition, and entanglement.