Jump to navigation Jump to search. Portuguese[edit]. Noun[edit]. condensados de Bose-Einstein m. plural of condensado de Bose-Einstein. Retrieved from. Request PDF on ResearchGate | Dinámica de vórtices en un condensado de Bose-Einstein | We numerically solve the Gross-Pitaevskii equation for a. Request PDF on ResearchGate | On Jan 1, , M Casas and others published Los condensados de Bose-Einstein: las quinta y sexta fase de la materia.

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Bose–Einstein condensate – Wikipedia

BEC theory traces back towhen Bose considered how groups of photons behave. This will be a negligible fraction of the total number of particles.

When the JILA team raised the magnetic field strength further, the condensate suddenly reverted to attraction, imploded and shrank beyond detection, then exploded, expelling about two-thirds of its 10, atoms. MagnonsExcitonsand Polaritons have integer spin which means they are bosons that can form condensates. Research tool superfluidity In superfluidity: Learn More in these related Britannica articles: To exhibit Bose—Einstein condensation, the fermions must “pair up” to form bosonic compound particles e.

This leads to corrections for the ground state. By construction, the GPE uses the following simplifications: This page was last edited on 24 Decemberat Please try again later.

It was quickly believed that the superfluidity was due to partial Bose—Einstein condensation of the liquid.


Retrieved 17 April JETP 7, ]. In condensation was demonstrated in antiferromagnetic Tl Cu Cl 3[27] at temperatures as large as 14 K. If you prefer to suggest your own revision of the article, you can go to edit mode requires login. Years after, inKirkpatrick and Dorfman obtained similar equations using another microscopical approach.

Retrieved 12 February Phillips the Nobel Prize in Physics and magnetic evaporative cooling. Most likely they formed molecules of two rubidium atoms; [32] energy gained condensaeos this bond imparts velocity sufficient to leave the trap without being detected.

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condensado de Bose-Einstein

Julian—Gregorian uncertainty CS1 maint: The Royal Swedish Academy of Sciences. Please note that our editors may make some formatting changes or correct spelling or grammatical errors, and may also contact you if any clarifications are needed. 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.

They cooled a dilute vapor of approximately two thousand rubidium atoms to below nK using a combination of laser cooling a technique that won its inventors Steven ChuClaude Cohen-Tannoudjiand William D. Beyond the Gross-Pitaevskii approximation”. The chemistry of systems at room temperature is determined by the electronic properties, which is essentially fermionic, since room temperature thermal excitations have typical energies much higher than the hyperfine values.

Research has, however, indicated they are metastable states, so may have relatively long lifetimes.

Condensado de Bose-Einstein – Wikipedia, a enciclopedia libre

If the two states are equal in energy, each different configuration is equally likely. This section needs additional citations for verification. Bilayer system experiments first demonstrated condensation inby Hall voltage disappearance. The effect has mainly been observed on alkaline atoms which have nuclear properties particularly suitable for working with traps.


Retrieved 26 January Superfluid helium-4 is a liquid rather than a gas, which means that the interactions between the atoms are relatively strong; the original theory of Bose—Einstein condensation must be heavily modified in order to describe it. Archived from bosee original on 12 October Internet URLs are the best.

The bosonic behavior of some of these alkaline gases appears odd at first sight, because their nuclei have half-integer total spin. This graph served as the cover design for the textbook Thermal Physics by Ralph Baierlein. The balance is a statistical effect: There are different Fortran and C programs re its solution for contact interaction [14] [15] and long-range dipolar interaction [16] which can be freely used.

More tightly confined directions have bigger widths in the ballistic velocity distribution.