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searching for Point particle 61 found (96 total)

Angular acceleration (1,498 words) [view diff] exact match in snippet view article find links to article

the body's centroid; and orbital angular acceleration, involving a point particle and an external axis. Angular acceleration has physical dimensions of

Worldsheet (524 words) [view diff] exact match in snippet view article find links to article

Susskind as a direct generalization of the world line concept for a point particle in special and general relativity. The type of string, the geometry

Black hole electron (1,134 words) [view diff] exact match in snippet view article find links to article

the most comprehensive theory of particles, treats the electron as a point particle. There is no evidence that the electron is a black hole (or naked singularity)

Nambu–Goto action (1,451 words) [view diff] exact match in snippet view article find links to article

the principles of Lagrangian mechanics. Just as the action for a free point particle is proportional to its proper time — i.e., the "length" of its world-line

Angular velocity (2,525 words) [view diff] no match in snippet view article find links to article

In physics, angular velocity (symbol ω or ω → {\displaystyle {\vec {\omega }}} , the lowercase Greek letter omega), also known as angular frequency vector

Differentiable curve (3,326 words) [view diff] exact match in snippet view article find links to article

(the natural parametrization). From the point of view of a theoretical point particle on the curve that does not know anything about the ambient space, all

Canonical commutation relation (2,998 words) [view diff] exact match in snippet view article find links to article

position operator x and momentum operator px in the x direction of a point particle in one dimension, where [x , px] = x px − px x is the commutator of

Sigma model (4,133 words) [view diff] exact match in snippet view article find links to article

physics, a sigma model is a field theory that describes the field as a point particle confined to move on a fixed manifold. This manifold can be taken to

Newton–Cartan theory (1,387 words) [view diff] exact match in snippet view article find links to article

principle motivates a geometric version of the equation of motion for a point particle in the potential U {\displaystyle U} m t x → ¨ = − m g ∇ → U {\displaystyle

Inversion transformation (910 words) [view diff] exact match in snippet view article find links to article

minimum of 4 points, this symmetry cannot be a symmetry of point particle theory. Point particle theory relies on knowing the lengths of paths of particles

Lagrangian (field theory) (5,951 words) [view diff] exact match in snippet view article

Lagrangian L = T − V {\displaystyle L=T-V} for the kinetic term of a free point particle written as T = m v 2 / 2 {\displaystyle T=mv^{2}/2} . The scalar theory

Octopus (software) (699 words) [view diff] no match in snippet view article

Also, the code may perform dynamics by considering the classical (i.e. point-particle) approximation for the nuclei. These dynamics may be non-adiabatic,

Regularization (physics) (2,895 words) [view diff] exact match in snippet view article

8\pi r_{e}},} which becomes infinite as re → 0. This implies that the point particle would have infinite inertia, making it unable to be accelerated. Incidentally

String (physics) (669 words) [view diff] exact match in snippet view article

This is analogous to the one-dimensional worldline traced out by a point particle. The physics of a string is described by means of a two-dimensional

Classical electromagnetism (1,841 words) [view diff] exact match in snippet view article find links to article

differentiated accordingly to obtain the complete field equations for a moving point particle. Branches of classical electromagnetism such as optics, electrical and

CPT symmetry (1,284 words) [view diff] no match in snippet view article find links to article

string theory models, as well as by some other models that lie outside point-particle quantum field theory. Some proposed violations of Lorentz invariance

Configuration space (physics) (1,410 words) [view diff] exact match in snippet view article

the analogous concept called quantum state space. The analog of a "point particle" becomes a single point in C P 1 {\displaystyle \mathbb {C} \mathbf

Dynamical billiards (3,684 words) [view diff] exact match in snippet view article find links to article

along geodesics. Hadamard's billiards concern the motion of a free point particle on a surface of constant negative curvature, in particular, the simplest

Mott scattering (593 words) [view diff] no match in snippet view article find links to article

atomic nucleus The reason is that the Mott cross section assumes only point-particle Coulombic and magnetic interactions between the incoming electrons and

Pilot wave theory (3,433 words) [view diff] exact match in snippet view article find links to article

}}S\left(\,{\vec {r}},\,t\,\right)~.} According to pilot wave theory, the point particle and the matter wave are both real and distinct physical entities (unlike

Non-relativistic gravitational fields (1,568 words) [view diff] no match in snippet view article find links to article

decomposition of the electromagnetic 4-vector potential. Indeed, a system of point-particle charges moving slowly with respect to the speed of light may be studied

Geodesic deviation (789 words) [view diff] exact match in snippet view article find links to article

deviation equation can be derived from the second variation of the point particle Lagrangian along geodesics, or from the first variation of a combined

Action (physics) (3,074 words) [view diff] exact match in snippet view article

orbits.: 477 When relativistic effects are significant, the action of a point particle of mass m travelling a world line C parametrized by the proper time

Chaotic scattering (1,761 words) [view diff] exact match in snippet view article find links to article

simple: we have three hard discs arranged in some triangular formation, a point particle is sent in and undergoes perfect, elastic collisions until it exits

Laplace–Runge–Lenz vector (10,213 words) [view diff] exact match in snippet view article find links to article

\times \mathbf {L} -mk\mathbf {\hat {r}} ,} where m is the mass of the point particle moving under the central force, p is its momentum vector, L = r × p

VisIt (1,342 words) [view diff] exact match in snippet view article find links to article

including a twenty seven billion data point structured grid, a one billion point particle simulation, and curvilinear, unstructured, and AMR meshes with hundreds

Bra–ket notation (6,393 words) [view diff] exact match in snippet view article find links to article

bra–ket notation. A few examples follow: The Hilbert space of a spin-0 point particle is spanned by a "position basis" { |r⟩ }, where the label r extends

Eddington–Finkelstein coordinates (1,556 words) [view diff] case mismatch in snippet view article find links to article

David (1958). "Past-Future Asymmetry of the Gravitational Field of a Point Particle". Phys. Rev. 110 (4): 965–967. Bibcode:1958PhRv..110..965F. doi:10.1103/PhysRev

Phonon (6,752 words) [view diff] exact match in snippet view article find links to article

are represented by an elastic spring. Each atom is assumed to be a point particle and the nucleus and electrons move in step (adiabatic theorem): n −

Black hole (18,636 words) [view diff] case mismatch in snippet view article find links to article

D. (1958). "Past-Future Asymmetry of the Gravitational Field of a Point Particle". Physical Review. 110 (4): 965–967. Bibcode:1958PhRv..110..965F. doi:10

Schwarzschild metric (5,027 words) [view diff] exact match in snippet view article find links to article

theory of gravity that corresponds to the gravitational field around a point particle. Even at the surface of the Earth, the corrections to Newtonian gravity

Richard P.A.C. Newman (432 words) [view diff] exact match in snippet view article find links to article

1984-1986. He died in 2000. Newman, R. P. A. C., & McVittie, G. C., A point particle model universe, in Gen. Rel. Grav. 14, 591 (1982) Newman, R. P. A. C

Newton's laws of motion (15,329 words) [view diff] exact match in snippet view article find links to article

q ˙ {\displaystyle {\dot {q}}} . The simplest example is a massive point particle, the Lagrangian for which can be written as the difference between its

Jerk (physics) (4,191 words) [view diff] exact match in snippet view article

The whole path is continuous, and its pieces are smooth. Now assume a point particle moves with constant speed along this path, so its tangential acceleration

Werner Heisenberg (13,580 words) [view diff] exact match in snippet view article find links to article

reinterpret the Dirac equation as a "classical" field equation for any point particle of spin ħ/2, itself subject to quantization conditions involving anti-commutators

Electron (15,443 words) [view diff] exact match in snippet view article find links to article

quantum electrodynamics. The apparent paradox in classical physics of a point particle electron having intrinsic angular momentum and magnetic moment can be

Geoffrey Chew (776 words) [view diff] no match in snippet view article find links to article

calculate the interactions of bound-states without assuming that there is a point-particle field theory underneath. The S-matrix approach did not provide a local

Relativistic angular momentum (10,812 words) [view diff] exact match in snippet view article find links to article

relativistic quantum mechanics, although for an extended body rather than a point particle. In relativistic quantum mechanics, elementary particles have spin and

Ehrenfest paradox (3,334 words) [view diff] exact match in snippet view article find links to article

61.032109. S2CID 5783649. Studies general non-inertial motion of a point particle and treats rotating disk as a collection of such non-inertial particles

AdS/CFT correspondence (6,688 words) [view diff] exact match in snippet view article find links to article

means replacing the one-dimensional diagram representing the path of a point particle by a two-dimensional surface representing the motion of a string. Unlike

Postulates of special relativity (3,159 words) [view diff] exact match in snippet view article find links to article

objects in spacetime are described by worldlines (if the object is a point particle) or worldsheets (if the object is larger than a point). The worldline

Deformation (mathematics) (4,021 words) [view diff] no match in snippet view article

the idea that a string theory can be regarded as a deformation of a point-particle theory)[citation needed]. This is now accepted as proved, after some

Montonen–Olive duality (3,285 words) [view diff] exact match in snippet view article find links to article

and magnetically charged objects look very different: one an electron point particle that is weakly coupled and the other a monopole soliton that is strongly

Virtual work (6,342 words) [view diff] exact match in snippet view article find links to article

differential calculus, and is termed the calculus of variations. Consider a point particle that moves along a path which is described by a function r ( t ) {\displaystyle

Ergodicity (8,837 words) [view diff] exact match in snippet view article find links to article

kinetic energy E = 1 2 m v 2 {\displaystyle E={\tfrac {1}{2}}mv^{2}} of a point particle is hardly accidental; this is the whole point of calling such things

Metric tensor (8,861 words) [view diff] exact match in snippet view article find links to article

integral E can be seen to directly correspond to the kinetic energy of a point particle moving on the surface of a manifold. Thus, for example, in Jacobi's

Renormalization (8,436 words) [view diff] exact match in snippet view article find links to article

r_{\text{e}}}},} which becomes infinite as re → 0. This implies that the point particle would have infinite inertia and thus cannot be accelerated. Incidentally

Gravitational instanton (2,422 words) [view diff] exact match in snippet view article find links to article

action and the Gibbons–Hawking–York boundary term, becomes that of a point particle. Then the trajectory is the scale factor and the curvature parameter

Feynman diagram (16,026 words) [view diff] exact match in snippet view article find links to article

initial value of the field, analogous to the starting position for a point particle, and the field values φ(B) at each point of the final hypersurface defines

Shell theorem (5,993 words) [view diff] exact match in snippet view article find links to article

of a spherical mass may be calculated by treating all the mass as a point particle at the center of the sphere. A solid, spherically symmetric body can

De Broglie–Bohm theory (16,578 words) [view diff] exact match in snippet view article find links to article

physical system consists in a spatiotemporally propagating wave and a point particle guided by it. The wave is described mathematically by a solution ψ {\displaystyle

Drude particle (1,322 words) [view diff] exact match in snippet view article find links to article

extension to the classical Drude oscillator. Instead of a classical point particle serving as a proxy for the charge distribution, a QDO uses a quantum

First class constraint (4,554 words) [view diff] exact match in snippet view article find links to article

are called secondary constraints. Consider the dynamics of a single point particle of mass m with no internal degrees of freedom moving in a pseudo-Riemannian

Low-energy ion scattering (3,474 words) [view diff] exact match in snippet view article find links to article

Repulsive scattering by a point particle.

Timeline of gravitational physics and relativity (13,987 words) [view diff] case mismatch in snippet view article find links to article

David (1958). "Past-Future Asymmetry of the Gravitational Field of a Point Particle". Physical Review. 110 (4): 965–967. Bibcode:1958PhRv..110..965F. doi:10

Molecular Hamiltonian (5,144 words) [view diff] exact match in snippet view article find links to article

uniformly (i.e., with constant velocity) through space as if it were a point particle with mass equal to the sum Mtot of the masses of all the particles.

Geodesics on an ellipsoid (8,411 words) [view diff] exact match in snippet view article find links to article

peuvent s'intégrer" [On special cases where the equations of motion of a point particle can be integrated]. Journal de Mathématiques Pures et Appliquées (in

Gaurav Khanna (physicist) (1,960 words) [view diff] no match in snippet view article

waveforms. He trained this model on the basis of waveform data generated by point-particle black hole perturbation theory (ppBHPT), and evaluated its applicability

Lie algebra extension (17,698 words) [view diff] exact match in snippet view article find links to article

relativistic string traces out a world sheet in spacetime, just like a point particle traces out a world line. This world sheet can locally be parametrized

Phase space crystal (3,837 words) [view diff] exact match in snippet view article find links to article

giving rise to many-body phase space crystals. In quantum mechanics, the point particle is replaced by a quantum wave packet and the divergence problem is naturally

Angular velocity tensor (2,523 words) [view diff] exact match in snippet view article find links to article

the marked contrast of this with the orbital angular velocity of a point particle, which certainly does depend on the choice of origin.) See the graph