Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

Ewald summation

Index Ewald summation

Ewald summation, named after Paul Peter Ewald, is a method for computing long-range interactions (e.g., electrostatic interactions) in periodic systems. [1]

37 relations: Charge density, Computational chemistry, Computer, Computer simulation, Conditional convergence, Convergent series, Convolution, Coulomb's law, Dirac delta function, Electrostatics, Fast Fourier transform, Fast multipole method, Force, Fourier transform, Frequency domain, Galaxy, Gravity, Inverse-square law, Ionic crystal, Journal of Chemical Theory and Computation, Lennard-Jones potential, Madelung constant, Molecular dynamics, Molecular modelling, Molecule, Normal distribution, Parallelepiped, Parseval's theorem, Paul Peter Ewald, Periodic boundary conditions, Plasma (physics), Poisson summation formula, Potential, Singularity (mathematics), Theoretical physics, Time complexity, Wolf summation.

Charge density

In electromagnetism, charge density is a measure of the amount of electric charge per unit length, surface area, or volume.

New!!: Ewald summation and Charge density · See more »

Computational chemistry

Computational chemistry is a branch of chemistry that uses computer simulation to assist in solving chemical problems.

New!!: Ewald summation and Computational chemistry · See more »

Computer

A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.

New!!: Ewald summation and Computer · See more »

Computer simulation

Computer simulation is the reproduction of the behavior of a system using a computer to simulate the outcomes of a mathematical model associated with said system.

New!!: Ewald summation and Computer simulation · See more »

Conditional convergence

In mathematics, a series or integral is said to be conditionally convergent if it converges, but it does not converge absolutely.

New!!: Ewald summation and Conditional convergence · See more »

Convergent series

In mathematics, a series is the sum of the terms of an infinite sequence of numbers.

New!!: Ewald summation and Convergent series · See more »

Convolution

In mathematics (and, in particular, functional analysis) convolution is a mathematical operation on two functions (f and g) to produce a third function, that is typically viewed as a modified version of one of the original functions, giving the integral of the pointwise multiplication of the two functions as a function of the amount that one of the original functions is translated.

New!!: Ewald summation and Convolution · See more »

Coulomb's law

Coulomb's law, or Coulomb's inverse-square law, is a law of physics for quantifying the amount of force with which stationary electrically charged particles repel or attract each other.

New!!: Ewald summation and Coulomb's law · See more »

Dirac delta function

In mathematics, the Dirac delta function (function) is a generalized function or distribution introduced by the physicist Paul Dirac.

New!!: Ewald summation and Dirac delta function · See more »

Electrostatics

Electrostatics is a branch of physics that studies electric charges at rest.

New!!: Ewald summation and Electrostatics · See more »

Fast Fourier transform

A fast Fourier transform (FFT) is an algorithm that samples a signal over a period of time (or space) and divides it into its frequency components.

New!!: Ewald summation and Fast Fourier transform · See more »

Fast multipole method

The fast multipole method (FMM) is a numerical technique that was developed to speed up the calculation of long-ranged forces in the ''n''-body problem.

New!!: Ewald summation and Fast multipole method · See more »

Force

In physics, a force is any interaction that, when unopposed, will change the motion of an object.

New!!: Ewald summation and Force · See more »

Fourier transform

The Fourier transform (FT) decomposes a function of time (a signal) into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of its constituent notes.

New!!: Ewald summation and Fourier transform · See more »

Frequency domain

In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time.

New!!: Ewald summation and Frequency domain · See more »

Galaxy

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.

New!!: Ewald summation and Galaxy · See more »

Gravity

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

New!!: Ewald summation and Gravity · See more »

Inverse-square law

The inverse-square law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity.

New!!: Ewald summation and Inverse-square law · See more »

Ionic crystal

An ionic crystal is a crystal consisting of ions bound together by their electrostatic attraction.

New!!: Ewald summation and Ionic crystal · See more »

Journal of Chemical Theory and Computation

The Journal of Chemical Theory and Computation is a peer-reviewed scientific journal, established in 2005 by the American Chemical Society.

New!!: Ewald summation and Journal of Chemical Theory and Computation · See more »

Lennard-Jones potential

The Lennard-Jones potential (also termed the L-J potential, 6-12 potential, or 12-6 potential) is a mathematically simple model that approximates the interaction between a pair of neutral atoms or molecules.

New!!: Ewald summation and Lennard-Jones potential · See more »

Madelung constant

The Madelung constant is used in determining the electrostatic potential of a single ion in a crystal by approximating the ions by point charges.

New!!: Ewald summation and Madelung constant · See more »

Molecular dynamics

Molecular dynamics (MD) is a computer simulation method for studying the physical movements of atoms and molecules.

New!!: Ewald summation and Molecular dynamics · See more »

Molecular modelling

Molecular modelling encompasses all methods, theoretical and computational, used to model or mimic the behaviour of molecules.

New!!: Ewald summation and Molecular modelling · See more »

Molecule

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

New!!: Ewald summation and Molecule · See more »

Normal distribution

In probability theory, the normal (or Gaussian or Gauss or Laplace–Gauss) distribution is a very common continuous probability distribution.

New!!: Ewald summation and Normal distribution · See more »

Parallelepiped

In geometry, a parallelepiped is a three-dimensional figure formed by six parallelograms (the term rhomboid is also sometimes used with this meaning).

New!!: Ewald summation and Parallelepiped · See more »

Parseval's theorem

In mathematics, Parseval's theorem usually refers to the result that the Fourier transform is unitary; loosely, that the sum (or integral) of the square of a function is equal to the sum (or integral) of the square of its transform.

New!!: Ewald summation and Parseval's theorem · See more »

Paul Peter Ewald

Paul Peter Ewald, FRS (January 23, 1888 in Berlin, Germany – August 22, 1985 in Ithaca, New York) was a German crystallographer and physicist, a pioneer of X-ray diffraction methods.

New!!: Ewald summation and Paul Peter Ewald · See more »

Periodic boundary conditions

Periodic boundary conditions (PBCs) are a set of boundary conditions which are often chosen for approximating a large (infinite) system by using a small part called a unit cell.

New!!: Ewald summation and Periodic boundary conditions · See more »

Plasma (physics)

Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.

New!!: Ewald summation and Plasma (physics) · See more »

Poisson summation formula

In mathematics, the Poisson summation formula is an equation that relates the Fourier series coefficients of the periodic summation of a function to values of the function's continuous Fourier transform.

New!!: Ewald summation and Poisson summation formula · See more »

Potential

Potential generally refers to a currently unrealized ability.

New!!: Ewald summation and Potential · See more »

Singularity (mathematics)

In mathematics, a singularity is in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability.

New!!: Ewald summation and Singularity (mathematics) · See more »

Theoretical physics

Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena.

New!!: Ewald summation and Theoretical physics · See more »

Time complexity

In computer science, the time complexity is the computational complexity that describes the amount of time it takes to run an algorithm.

New!!: Ewald summation and Time complexity · See more »

Wolf summation

The Wolf summation is a method for computing the electrostatic interactions of systems (e.g. crystals).

New!!: Ewald summation and Wolf summation · See more »

Redirects here:

Ewald Sum, Ewald sum, Particle Mesh Ewald, Particle mesh Ewald.

References

[1] https://en.wikipedia.org/wiki/Ewald_summation

OutgoingIncoming
Hey! We are on Facebook now! »