Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-07-20
Intl. J. Mod. Phys. B 20, 5264 (2006)
Physics
Condensed Matter
Statistical Mechanics
8 pages, 4 figures, uses ws-ijmpb, graphicx, xspace; minor revisions from version published in Proc. 13th Intl. Conference on
Scientific paper
10.1142/S0217979206036351
We describe calculations of the properties of quantum fluids inside nanotubes of various sizes. Very small radius ($R$) pores confine the gases to a line, so that a one-dimensional (1D) approximation is applicable; the low temperature behavior of 1D $^4$He is discussed. Somewhat larger pores permit the particles to move off axis, resulting eventually in a transition to a cylindrical shell phase--a thin film near the tube wall; we explored this behavior for H$_2$. At even larger $R\sim 1$ nm, both the shell phase and an axial phase are present. Results showing strong binding of cylindrical liquids $^4$He and $^3$He are discussed.
Cole Milton W.
Urban Nathan M.
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