In physics, a free particle is a particle that, in some sense, is not bound by an external force, or equivalently not in a region where its potential...

system with a position degree of freedom is a free particle in a single spatial dimension. A free particle is one which is not subject to external influences...

the particle in a box model (also known as the infinite potential well or the infinite square well) describes the movement of a free particle in a small...

moving particle is different from non-relativistic mechanics. It is instructive to look at the total relativistic energy of a free test particle. An observer...

Free electron in physics may refer to: Electron, as a free particle Solvated electron Charge carrier, as carriers of electric charge Valence electron...

energy eigenstates have the same energy. A simple example of this is a free particle, whose energy eigenstates have wavefunctions that are propagating plane...

In particle physics, a massless particle is an elementary particle whose invariant mass is zero. At present the only confirmed massless particle is the...

physics, a subatomic particle is a particle smaller than an atom. According to the Standard Model of particle physics, a subatomic particle can be either a...

of free space that does not contain a charge. It is described by Laplace's equation: ∇ 2 u = 0 {\displaystyle \nabla ^{2}u=0} One can model particle diffusion...

mechanics, the case of a particle in a one-dimensional ring is similar to the particle in a box. The Schrödinger equation for a free particle which is restricted...

Wave-particle duality is the concept in quantum mechanics that quantum entities exhibit particle or wave properties according to the experimental circumstances...

the kinetic energy of the particle (whereas the modulation is entirely responsible for the kinetic energy of a free particle). In regions where the band...

of this is that the amplitude for a free particle to travel between two points includes amplitudes for the particle to fluctuate into an antiparticle,...

function that depends upon position is the probability density of measuring a particle as being at a given place. The integral of a wavefunction's squared modulus...

In particle physics, the W and Z bosons are vector bosons that are together known as the weak bosons or more generally as the intermediate vector bosons...

A particle accelerator is a machine that uses electromagnetic fields to propel charged particles to very high speeds and energies to contain them in well-defined...

asymptotically free particle states (the in-states and the out-states) in the Hilbert space of physical states. A multi-particle state is said to be free (or non-interacting)...

four components, a solution of the free Klein–Gordon equation. Despite historically it was invented as a single particle equation the Klein–Gordon equation...

mechanics. Imagine a single particle that can be described with k {\displaystyle k} numbers (take for example a free particle described by its position...

the use of the action principle via the Euler–Lagrange equations. A free particle (mass m and velocity v) in Euclidean space moves in a straight line...

The moving particle semi-implicit (MPS) method is a computational method for the simulation of incompressible free surface flows. It is a macroscopic...

Smoothed-particle hydrodynamics (SPH) is a computational method used for simulating the mechanics of continuum media, such as solid mechanics and fluid...

Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation...

Lagrangian for two interacting particles is L = L f + L int , {\displaystyle L=L_{\text{f}}+L_{\text{int}},} where the free particle part is L f = 1 2 m 1 v...

same wavefunction. A free quantum particle is described by a single-particle Schrödinger equation. Interaction between particles in a real gas is taken...

bradyon, tardyon, or ittyon in Wiktionary, the free dictionary. Elementary particle Massless particle Particle Tachyon Ron Folman; Erasmo Recami (1995). "On...

In physics, mean free path is the average distance over which a moving particle (such as an atom, a molecule, or a photon) travels before substantially...

completely specifies a unique eigenstate of the Hydrogenic atom. For a free particle, the Hamiltonian H = − ℏ 2 2 m ∇ 2 {\displaystyle H=-{\frac {\hbar ^{2}}{2m}}\nabla...

The neutron is a subatomic particle, symbol n or n0 , which has a neutral (not positive or negative) charge, and a mass slightly greater than that of a...

propagator is a function that specifies the probability amplitude for a particle to travel from one place to another in a given period of time, or to travel...