A function with this name is given by the derivative of the coupling constant g with respect to the logarithm of the energy scale.
A function with this name is given by the derivative of the coupling constant g with respect to the logarithm of the energy scale. That function encodes the running of the coupling. A Landau pole occurs when that function with this name grows faster than linearly.  A quantity with this name measures the efficiency of a confining magnetic field and is given by the ratio of magnetic pressure to plasma pressure. In thermodynamics, the reciprocal of Boltzmann's constant times temperature is usually called this. In special relativity, this is the ratio of an object's speed with the speed of light. A neutron decays into a proton and an electron in the minus form of this type of decay, which changes the atomic number but not mass of the nucleus. FTP, name this Greek letter that follows alpha.
A function with this name is given by the derivative of the coupling constant g with respect to the logarithm of the energy scale.
Beta