Theoretical Physics
General relativity
General relativity is a 1915 theory of gravitation developed by Albert Einstein that models gravity as the curvature of spacetime produced by energy and momentum. It underpins modern astrophysics and cosmology, predicting phenomena such as black holes, gravitational waves, gravitational lensing, and the expansion of the universe, and has been repeatedly confirmed by high-precision experiments and observations.
Quantum
In physics, a quantum is the minimum amount of any physical entity involved in an interaction, representing discrete units of energy, charge, or other physical properties.
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 Foam
Quantum foam, also known as spacetime foam, is a theoretical concept in quantum mechanics, conceived by John Archibald Wheeler. It describes the fabric of spacetime at the subatomic, Planck scale as a turbulent, fluctuating medium where virtual particles and microscopic black holes are constantly created and destroyed, giving spacetime a "foamy" texture.
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.