Long-range order

Long-range order

In physics, long-range order characterizes physical systems in which remote portions of the same sample exhibit correlated behavior.

This can be seen with a correlation function, namely the spin-spin correlation function:

G(x,x') = langle s(x)s(x') angle.

This function is equal to unity when x=x' and decreases as the distance |x-x'| increases. Typically, it decays exponentially to zero at large distances, and the system is considered to be disordered. If, however, the correlation function decays to a constant value at large |x-x'| then the system is said to possess long-range order. If it decays to zero as a power of the distance then it is called quasi-long-range order.

See also

*order-disorder


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • long range order — tolimoji tvarka statusas T sritis chemija apibrėžtis Griežtai periodiškas sandaros pasikartojimas labai dideliais atstumais. atitikmenys: angl. long range order rus. дальний порядок …   Chemijos terminų aiškinamasis žodynas

  • long range order — tolimoji tvarka statusas T sritis fizika atitikmenys: angl. long range order vok. Fernordnung, f rus. дальний порядок, m pranc. ordre à grande distance, m …   Fizikos terminų žodynas

  • long-range order parameter — tolimosios tvarkos parametras statusas T sritis Standartizacija ir metrologija apibrėžtis Izingo feromagnetiko atomų, kurių magnetiniai momentai nukreipti viena kryptimi, ir atomų, kurių magnetiniai momentai nukreipti priešinga kryptimi, dalių… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • long-range order parameter — tolimosios tvarkos parametras statusas T sritis fizika atitikmenys: angl. long range order parameter vok. Fernordnungsparameter, m rus. параметр дальнего порядка, m pranc. paramètre d’ordre à grande distance, m …   Fizikos terminų žodynas

  • degree of long-range order — tolimosios tvarkos laipsnis statusas T sritis fizika atitikmenys: angl. degree of long range order; long range ordering degree vok. Fernordnungsgrad, m rus. степень дальнего порядка, f pranc. degré d’ordre à grande distance, m …   Fizikos terminų žodynas

  • long-range order — Смотри дальний порядок …   Энциклопедический словарь по металлургии

  • Long Range — may refer to:*ER (Extended Range), a type of aircraft *Long Range (band), a techno band *Long range Wi Fi *Long range dependency *Long Range Mountains *Long Range Surveillance *Long range order *Long Range Aviation *Long range planning *Long… …   Wikipedia

  • Long-range dependency — A self similar phenomenon behaves the same when viewed at different degrees of magnification, or different scales on a dimension (space or time). Self similar processes can be described using heavy tailed distributions, also known as long tailed… …   Wikipedia

  • long-range ordering degree — tolimosios tvarkos laipsnis statusas T sritis fizika atitikmenys: angl. degree of long range order; long range ordering degree vok. Fernordnungsgrad, m rus. степень дальнего порядка, f pranc. degré d’ordre à grande distance, m …   Fizikos terminų žodynas

  • Long Range Aviation — ( ru. Дальняя Авиация, Dalnaya Aviatsiya , or ru. ДА, DA ) was the branch of the Soviet Air Force tasked with long range bombardment of strategic targets with nuclear weapons. During the Cold War, it was the counterpart to the Strategic Air… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”