**Angular momentum****Axion****Baryon****Bose condensation****Boson**- A particle whose
**spin**quantum number is an integer. Bosons are usually associated with forces in a**Yang-Mills field theory**. **Charge conjugation symmetry****Chargino****Chirality**- A property of "handedness" which may be possessed by physical
entities in which
**parity**(mirror image) symmetry is nor perfectly observed. For instance, the**weak force**is said to be chiral because it has different effects on instances of the same particle having opposite**spin**. **Effective theory****Electroweak theory****Fermion**- A particle whose
**spin**quantum number is half of an (odd) integer. Matter particles are fermions, and they obey the**Pauli exclusion principle**. **Feynman diagram****Field**- A mathematical construct in which a mathematical entity, such as a number or a vector, is associated with each point in space. A field is often used to represent a force, such as electromagnetic or gravitational force, but fields can also be associated with particles.
**Gauge field**- A type of
**field**which arises as a result of a requirement for preserving local**gauge symmetry**in a**Yang-Mills field theory**. **Gauge symmetry**- A type of
**symmetry operation**which can be applied "locally" at any point in space. **Gluon****Goldstone boson****Gravitino****Graviton****Hadron****Helicity****Hierarchy problem****Higgs field**- A field (or more likely, a number of fields)
postulated to account for
**spontaneous symmetry breaking**in the**standard model**. Particles in the standard model acquire mass from interaction with a Higgs field. **Higgs boson**- A hypothetical (and much sought after) particle, with
**spin**0, that corresponds to a**Higgs field**. **Lepton****Lie algebra****Lie superalgebra****Lorentz transformation****Meson****Neutralino****Neutrino****Neutron****Noether's theorem****Parity****Pauli exclusion principle****Perturbation theory****Planck's constant****Planck energy****Planck length****Planck mass****Planck time****Poincaré group****Preon****Quantum chromodynamics****Quantum electrodynamics****Quantum field theory****Quark****Renormalization****Rishon****Spin**- A quantum mechanical property of particles (and fields) which is
roughly analogous to
**angular momentum**in classical mechanics. **Spontaneous symmetry breaking****Standard model****Strong force****Supergravity****Supersymmetry**- A postulated (but unverified) symmetry of nature in which
there is a
**fermion**which corresponds to every**boson**, and vice versa. **Symmetry operation**- A transformation that can be applied to a physical system, or an equation describing a physical system, that leaves the system or equation unchanged. Geometrical operations such as translation and rotation are examples.
**Technicolor force****Vacuum energy****Vacuum polarization****Weak force****Yang-Mills field theory**- A specific type of
**quantum field theory**in which the field arises out of a requirement to allow the application of a local**symmetry operation**at every point in space.

Copyright © 2002 by Charles Daney, All Rights Reserved