Talk:Superfluid film
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There are serious problems with this article
edit"Much of the interest in this field is because as the number of dimensions increases, the number of exactly solvable models diminishes drastically." Actually, this is wrong. In fact, lower dimensions are per se much more difficult to handle than higher dimensions. " In three or more dimensions one must resort to a mean field theory approach." This is quite wrong. In fact, In three or more dimensions many Quantum field theories can well be described by mean-field theory, while this is not possible for lower dimensions. This is related to the to the upper critical dimension https://en.wikipedia.org/wiki/Critical_dimension. — Preceding unsigned comment added by Vsilv (talk • contribs) 14:10, 13 June 2018 (UTC)
Untitled
editPlease add some info that describes what superfluid film IS and maybe some of its properies
--Fry-kun 05:18, 10 March 2007 (UTC)
"A second way is to have"? What do you mean?
unwikify?
edithas it been wikified already? i think someone forgot to remove the wikification tag. Xenocidic (talk) 18:35, 28 January 2008 (UTC)
This article needs an actual definition
editThis article lacks a paragraph or even sentence explaining what a "superfluid film" is, instead diving straight into the what's it is relevant to.
Torsion oscillator versus quartz crystal microbalance
editThe article seems to suggest that measurements involving the critical velocity need speeds around 100 times those achieved by the torsional oscillator, (or at least a significant fraction of 100). But for the same amplitude of oscillation, increasing the operating frequency from 1000 Hz to 10 kHz only multiplies the maximum speed by a factor of 10. (The same movements take place in a tenth of the time). So either:
- one of the frequencies is wrong, or
- one of the speeds is wrong, or
- the quartz crystal technique increases the amplitude, not just the frequency, and this needs mentioning.
(To me the third of those seems most likely, since capacitive coupling doesn't seem like a method designed to produce large movements unless ferocious voltages or very small gaps are involved.) Musiconeologist (talk) 02:48, 14 April 2024 (UTC)