Tuesday, March 22, 2005

Vacuum energy and Casimir Effect

I have to bring people's attention to this paper which just shows up and which meantions your name:

The Jaffe paper

and comments here.

I totally agree with Jaffe, plus some of my own opinions:

1.There is a total lack of experimental evidence for vacuum energy, other than the theoreticalCasimir Effect.

2.There is a total lack of experimental evidence for Casimir Effect, except for the Lamoreaux experiment, and maybe a few variety. The Lamoreaux experiment was admittedly conducted using lab scratch materials no more than $300, and not re-produced by any one.

3.The theoretical Casimir force, being an attractive force inverse proportional to the 4th power of the gap, is EXTREMELY distance sensitive, and could NOT have been measured using a Lamoreaux torque balance method. Since a stable equilibrium of force can not be acquired. (Force from a torque is only proportional to the 1st power of displacement).

4.Whatever microscopic forces Lamoreaux or others have measured. If it is measured correctly it is merely Van de Waals force between surfaces of metal plates.

I might also dare to say that my background allows me to know a bit more about experiments on surfaces of condensed matters, than theoretists who study particles at high energies.

Quantoken

7 Comments:

Blogger Zelah said...

Hi Quantoken,

You do realise that the Casimir effect IS ACTUALLY Van der Waal forces at some level!

In other words, the Casimir effect is essentially a measurement of Van der Waal forces at the macro level!

Please if you agree with the above, correct your recent post or you will look foolish!

8:10 PM

 
Blogger Zelah said...

Reference for above:

http://en.wikipedia.org/wiki/London_forces

8:12 PM

 
Blogger hplauze said...

Sad to say I just got back from a bowling tournament and decided to log in and do some websurfing. Quantoken I love your blog. I had some very good laughs. I am doing a paper on takamine guitar and have been downloading information for the last hour. I don’t know how I came across Vacuum energy and Casimir Effect but I am glad I did. It has set me back a little because I have spent the last hour reading your archives. If you don’t mind I would like to add you to my favorites so I can back again and read some more. Well I need to get back to takamine guitar. I am almost finished with it. Great job.
p.s some very good points on your blog

6:51 AM

 
Blogger Rebek said...

Well this blog certainly is not about guitar tab and chord. What the heck! I guess the internet can play some tricks on us sometimes. I have been on-line for two hours
researching guitar tab and chord and came tumbling across your blog. I LOVE IT! I needed a break from guitar tab and chord anyways :-) If you don't mind I want to add your
blog to my favorites list so I can come back later on and read some more stuff. Well I guess I should get back to researching guitar tab and chord.
Even though my search is not on Vacuum energy and Casimir Effect I am glad I came across your blog. Keep blogging away!

8:06 AM

 
Blogger Rebek said...

Sad to say I just got back from a bowling tournament and decided to log in and do some websurfing. Quantoken I love your blog. I had some very good laughs. I am doing a paper on acoustic electric guitar and have been downloading information for the last hour. I don’t know how I came across Vacuum energy and Casimir Effect but I am glad I did. It has set me back a little because I have spent the last hour reading your archives. If you don’t mind I would like to add you to my favorites so I can back again and read some more. Well I need to get back to acoustic electric guitar. I am almost finished with it. Great job.
p.s some very good points on your blog

5:49 AM

 
Blogger Mike Varney said...

You really need to read more about the Lamoreaux experiments, and many AFM experiments verifying the results.
http://arxiv.org/PS_cache/hep-ph/pdf/0009/0009062.pdf
http://arxiv.org/PS_cache/hep-ph/pdf/0210/0210004.pdf

References therein.

12:29 PM

 
Blogger Steve said...

I just now saw these comments, and even though they are rather dated, thought that I'd comment.

I find it interesting that the cost of an experiment gives it credibility. With this criterion, I'd think the more expensive, the less credible, as there is more to lose when something goes wrong. In fact saying that my experiment cost $300 is partly a joke--of course all the junk was left over from other work that had been well supported.

It is not exactly correct to say that the Casimir force is the same as the van der Waals force. I'd recommend Casimir's papers on this topic.

I agree that the Casimir force does not imply the existence of zero point energy. There are multiple ways to look at this problem.

Sincerely

Steve Lamoreaux

4:31 PM

 

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