Bose-Einstein condensate (BEC), a state of matter in which separate atoms or subatomic particles, cooled to near absolute zero (0 K, − °C, or − ° F. Bose-Einstein condensate (plural Bose-Einstein condensates). (physics) A gaseous superfluid phase of matter in which all the particles have the same quantum. In the left plot, no Bose Einstein Condensation took place. One can see that the energy distribution of the atoms is given by the Bose Einstein statistics. In the.

Author: Mazutaur Nitaxe
Country: Rwanda
Language: English (Spanish)
Genre: Science
Published (Last): 27 December 2010
Pages: 366
PDF File Size: 2.44 Mb
ePub File Size: 16.85 Mb
ISBN: 408-4-43805-388-4
Downloads: 16588
Price: Free* [*Free Regsitration Required]
Uploader: Kezahn

Retrieved October 21, The examples where this could happen are the Bose—Fermi composite condensates, [18] [19] [20] [21] effectively lower-dimensional condensates, [22] and dense condensates and superfluid clusters and droplets. Retrieved 23 March This just leaves us with the coldest and slowest kondenast inside.

By construction, the GPE uses the following ,ondensat Archived from the original on 12 October kondensaat Internet URLs are the best. Research was finally successful in hydrogen with the aid of the newly developed method of ‘evaporative cooling’. Particles can only have a set amount of energy. Photosynthesis, the process by which green plants and certain other organisms transform light energy…. Quantum Computers work on a absolutely different basis than our normal computers.

This width is given by the curvature of the magnetic potential in the given direction. Beyond the Gross-Pitaevskii approximation”. A fraction of the condensate “tunnels” through this barrier. Satyendra Nath Bose first sent a paper to Einstein on the quantum statistics of light quanta now called photonsin which he derived Planck’s quantum radiation law without any reference to classical physics.

This makes all of the particles exactly the same and instead of bouncing around randomly in all different directions, they all bounce up and down in exactly the same way, forming something called a ‘giant matter wave’.


A conventional light laser emits a beam of coherent photons; they are all exactly in phase and can be focused to an extremely small, bright spot. When matter is in the BEC state it has zero viscosity.

Structure of the solution”. Magnons, electron spin waves, can be controlled by a magnetic field. A Bose—Einstein condensate is a change of state. The areas appearing white and light blue are at the lowest velocities. Bilayer system experiments first demonstrated condensation inby Hall voltage disappearance.

The Peletminskii equations also reproduce Khalatnikov hydrodynamical equations for superfluid as a limiting case. What the two found was that ordinarily, atoms have to have certain energies — in fact one of the fundamentals of quantum mechanics is that the energy of an atom or other subatomic particle can’t be arbitrary. The reversible flip from attraction to repulsion stems from quantum interference among wave-like condensate atoms. Jesse spent years covering finance and cut his teeth at local newspapers, working local politics and police beats.

In the indistinguishable case, each value of K is a single state, which has its own separate Boltzmann probability. Potential applications include more-accurate atomic clocks and enhanced techniques to make electronic chips, or integrated circuits.

Binodal Compressed fluid Cooling curve Equation of state Leidenfrost effect Macroscopic quantum phenomena Mpemba effect Order and disorder physics Spinodal Superconductivity Superheated vapor Superheating Thermo-dielectric effect. If you take enough of the particle’s energy away you get to the tiniest or the smallest amount of energy possible.

You can make it easier for kondenast to review and, hopefully, publish your contribution by keeping a few points in mind.

Researchers in the new field of atomtronics use the properties of Bose—Einstein condensates when manipulating groups of identical cold atoms using lasers. In other projects Wikimedia Commons. Archived from the original on 24 October At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context.


Instead, the atoms fall into the same quantum states, and can’t be distinguished from one another. See Terms of Use for details.

Bose–Einstein condensate – Simple English Wikipedia, the free encyclopedia

The phenomena of superfluidity of a Bose gas and superconductivity of a strongly-correlated Fermi gas a gas of Cooper pairs are tightly connected to Bose—Einstein condensation. Instead one can observe a high concentration of atoms in the ground state. Retrieved 25 June Additional resources Bose-Einstein Condensate: A BEC is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal airto ultra-low temperatures.

Excitonselectron-hole pairs, were predicted to condense at low temperature and high density by Boer et al. It was quickly believed that the superfluidity was due to partial Bose—Einstein condensation of the liquid.

The Peletminskii equations are valid for any finite temperatures below the critical point. One can see that the energy distribution of the atoms is given by the Bose Einstein statistics.


Superfluid helium has many unusual properties, including zero viscosity the ability to flow without dissipating energy and the existence of quantized vortices. To make a Bose-Einstein condensate, you start with a cloud of diffuse gas. The original interacting bosr can be converted to a system of non-interacting particles with a dispersion law.

The gas has extremely low density, about one-hundred-thousandth the density of normal air.