Instigating a Bosenova

[KALSTER]

First a quote from the NIST page on recent Bose-Einstein Condensate experiments:

” Working at JILA, physicist Carl Wieman's [pronounced wy-man] team has explored tuning the self-interaction of atoms in a BEC. By making a BEC in a particular isotope of rubidium, rubidium-85, and then changing the magnetic field in which the BEC is sitting, the team is able to adjust the wavefunction's self-interaction between repulsion and attraction. If the self-interaction is repulsive, all the parts of the wavefunction push each other away. If it is attractive, they all pull towards each other, like gravity. Achieving a pure BEC in rubidium-85 required the cloud of atoms to be cooled to about 3 billionths of a degree above absolute zero, the lowest temperature ever achieved.
Making the self-interaction mildly repulsive causes the condensate to swell up in a controlled manner, as predicted by theory. However, when the magnetic field is adjusted to make the interaction attractive, dramatic and very unexpected effects are observed.
The condensate first shrinks as expected, but rather than gradually clumping together in a mass, there is instead a sudden explosion of atoms outward. This "explosion," which actually corresponds to a tiny amount of energy by normal standards, continues for a few thousandths of a second. Left behind is a small cold remnant condensate surrounded by the expanding gas of the explosion. About half the original atoms in the condensate seem to have vanished in that they are not seen in either the remnant or the expanding gas cloud.”

They change the properties of the magnetic field trapping the BEC, but how does that affect the forces present in between the constituent atoms? Do they simply tune the field so that it cancels out repulsive forces by destructively interfering with them? Can this only be done with BEC’s because of the uniformity of the wavefunction the atoms collapsed to? Does it mean that the virtual force-carrier particles of each field (van der Waal?) interfere with each other and cancels out? What happens to the energy then, or does it simply revert to the ground zero point energy? What do they mean when they say that “this procedure caused the BEC to implode and shrink beyond detection”?

[Moontanman]

That's an amazing thing, I wonder what insights will be made from this "Nova" in test tube? It asks a great many questions that beg to be answered.

[Buffy]

Makes sense to me. I think its hot!

YouTube - Cannonball Adderley Sextet- Bossa Nova...

Jazz is rhythm and meaning,
Buffy

[Moontanman]

You are no doubt cool Buffy, cool no doubt. Absolute zero cool, BEC cool......

[Moontanman]

This is all well and good but what does it have to do with the Bose Einsteinium Condensate Nova?

[KALSTER]

Woop-tee-doo, Bosenova is a play on Bossa Nova. Now any non-hijacking comments?

[Moontanman]

Originally Posted by KALSTER

Woop-tee-doo, Bosenova is a play on Bossa Nova. Now any non-hijacking comments?

Duh, where did you park your squad car KALSTER?

[KALSTER]

Duh, where did you park your squad car KALSTER?

What is that supposed to mean? My point is that I made a serious post with interesting information and then some "residents" find it amusing to hijack the thread and post videos regarding Bossa Nova on here like children. What the hell? Is this the norm on this forum?

[Moontanman]

Originally Posted by KALSTER

What is that supposed to mean? My point is that I made a serious post with interesting information and then some "residents" find it amusing to hijack the thread and post videos regarding Bossa Nova on here like children. What the hell? Is this the norm on this forum?

Sorry dude, I thought you were being sarcastic, you will notice I did make a serious post at the beginning. I thought the BEC Nova was one of the most interesting things I've heard of in long while but I really don't know exactly what to make of it. It really looks like one of those things that will yield far more than it would seem at first blush. Just an oddity now but who knows type of thing. Look at the first laser, who would have predicted when we have now from that humble beginning. What is your take on the BEC Nova?

[KALSTER]

Originally Posted by Moontanman

Sorry dude, I thought you were being sarcastic, you will notice I did make a serious post at the beginning. I thought the BEC Nova was one of the most interesting things I've heard of in long while but I really don't know exactly what to make of it. It really looks like one of those things that will yield far more than it would seem at first blush. Just an oddity now but who knows type of thing. Look at the first laser, who would have predicted when we have now from that humble beginning. What is your take on the BEC Nova?

Oh, that's ok then It is just that Buffy is an administrator. Thanks for your comments, I share your enthusiasm (obviously), it is a phenomena that defies explanation using current theory. How often does that happen? My take? Well my take would mostly consist of uneducated speculation, hence my misguided post here. Being uneducated I naturally do have my own little hypothesis that might (in my mind) explain a lot of things. I have an idea that forces might be distinct fractal disturbances of an Einsteinian aether, the magnetic field (consisting of its own brand of fractals) being tuned to destructively interfere with the intermolecular forces of the BEC, but as I said, it is not based on current theory or understanding, which I am after on this thread. You?