View Full Version : Casimir event


jaiii
02-20-11, 10:30 AM
Hello.
What is about the mean force which operates from the outside of the Casimir plates phenomenon?

Thank you

cosmictraveler
02-20-11, 11:05 AM
We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the PFA are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop non-monotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.


more...

http://www.google.com/url?sa=t&source=web&cd=5&sqi=2&ved=0CDUQFjAE&url=http%3A%2F%2Fwww.daviddarling.info%2Fencyclope dia%2FC%2FCasimir.html&ei=9UlhTausA4a0lQfO6ZG5DA&usg=AFQjCNEojG2WFBRgCo1OQSIRGbvrBDMRUg

Me-Ki-Gal
02-20-11, 11:42 AM
We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the PFA are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop non-monotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.


more...

http://www.google.com/url?sa=t&source=web&cd=5&sqi=2&ved=0CDUQFjAE&url=http%3A%2F%2Fwww.daviddarling.info%2Fencyclope dia%2FC%2FCasimir.html&ei=9UlhTausA4a0lQfO6ZG5DA&usg=AFQjCNEojG2WFBRgCo1OQSIRGbvrBDMRUg

Interesting. That is how I see time. Past pushes the future and future pulls the past

BenTheMan
02-20-11, 12:51 PM
Interesting. That is how I see time. Past pushes the future and future pulls the past

There is nothing in the above to support this notion.

You are wrong.

And, the OP is confusing. What is it you're asking?

jaiii
02-20-11, 02:31 PM
Thank you for the article.
I see I will have to devote more to this phenomenon.