"In theoretical physics, quantum field theory (QFT) is a theoretical framework combining classical field theory, special relativity, and quantum mechanics."
Theoretical framework for the study of particles that combines the principles of quantum mechanics and special relativity.
Classical Mechanics: The study of how objects move and interact with each other under the influence of forces.
Quantum Mechanics: The study of the behavior of matter and energy on the atomic and subatomic scale.
Special Relativity: The theory that describes the behavior of objects at speeds approaching the speed of light.
General Relativity: The theory that describes the behavior of gravity in terms of the curvature of spacetime.
Quantum Field Theory: The theory that describes the behavior of elementary particles in terms of fields.
Quantum Electrodynamics (QED): The theory that describes the behavior of charged particles and electromagnetic fields.
Quantum Chromodynamics (QCD): The theory that describes the behavior of quarks and gluons, which make up protons and neutrons.
Electroweak Theory: The theory that describes the unification of the electromagnetic and weak nuclear forces.
Grand Unified Theory: A theory that seeks to unify all of the elementary particles and forces into a single framework.
String Theory: A theoretical framework that attempts to describe all particles and forces in terms of one-dimensional strings.
Black Holes: Massive objects with such strong gravitational fields that nothing, not even light, can escape.
Dark Matter: A form of matter that is thought to make up a significant portion of the universe, but cannot be directly observed.
Cosmology: The study of the origin, evolution, and structure of the universe.
Particle Detectors: Devices used to detect and measure the properties of subatomic particles.
Collider Physics: The study of the collisions between subatomic particles at high energies.
Neutrino Physics: The study of the properties and interactions of neutrinos, which are elementary particles with very little mass.
Nuclear Physics: The study of the properties and behavior of atomic nuclei.
Quantum Computing: A new computing paradigm that uses quantum mechanics to perform certain calculations more efficiently than with classical computers.
Quantum Information Theory: The study of how quantum mechanics can be used to process and transmit information.
Quantum Gravity: The theory that seeks to unify general relativity and quantum mechanics.
Quantum electrodynamics (QED): QED is the QFT that describes the electromagnetic interaction between charged particles. It is the most precise QFT that has ever been formulated and has served as the basis for much of particle physics research.
Quantum chromodynamics (QCD): QCD is the QFT that describes the strong nuclear force, which holds quarks together within protons and neutrons and binds protons and neutrons within atomic nuclei.
Electroweak theory: Electroweak theory is a unified theory that combines the electromagnetic and weak forces, which govern the behavior of subatomic particles.
Quantum gravity: Quantum gravity is an attempt to unify general relativity and quantum mechanics. This QFT describes the fundamental forces between subatomic particles and gravity.
Supersymmetry: Supersymmetry is a proposed extension to the Standard Model of particle physics that postulates the existence of a new symmetry between particles of different spin.
Grand Unified Theories (GUTs): GUTs are theoretical models that attempt to unify the strong, weak, and electromagnetic forces into a single, overarching force. They have not yet been proven, but they remain an active area of research.
"QFT is used in particle physics to construct physical models of subatomic particles."
"QFT is used in condensed matter physics to construct models of quasiparticles."
"QFT treats particles as excited states (also called quanta) of their underlying quantum fields."
"Quantum fields, which are more fundamental than the particles."
"The equation of motion of the particle is determined by minimization of the action computed for the Lagrangian."
"The Lagrangian is a functional of fields associated with the particle."
"Interactions between particles are described by interaction terms in the Lagrangian involving their corresponding quantum fields."
"Each interaction can be visually represented by Feynman diagrams."
"According to perturbation theory in quantum mechanics."
"A theoretical framework combining classical field theory, special relativity, and quantum mechanics."
"Quantum fields are more fundamental than the particles."
"The equation of motion of the particle is determined by minimization of the action computed for the Lagrangian."
"Interactions between particles are described by interaction terms in the Lagrangian involving their corresponding quantum fields."
"Each interaction can be visually represented by Feynman diagrams."
"QFT is used in particle physics to construct physical models of subatomic particles."
"QFT is used in condensed matter physics to construct models of quasiparticles."
"Particles are treated as excited states (quanta) of quantum fields."
"The minimization of the action computed for the Lagrangian."
"Interactions between particles manifest as interaction terms in the Lagrangian."