Fermion oceans are neutral, self bound fermi liquid films; they are present in the systems described at this workshop by Godfrin, Hallock, Laheurte, Saunders, etc.(1). These self bound films stand in contrast to the charged, unbound fermi gases, the fermion atmospheres, that are present in the systems described at this workshop by Leiderer, Dahm, Platzmann, Lea, etc.(2).
KeywordsThermodynamic Quantity Areal Density Single Particle State Fluid Film Single Particle Energy
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- 1.An ocean is a self bound fluid film. Its density is approximately uniform having a value near that of bulk material; cf an atmosphere.Google Scholar
- 2.An atmosphere is a fluid film of non-self-bound material, a gas, that owes its existence to an external force that holds it in place. It is non-uniform having a density determined by the number of particles in it and the strength of the external field.Google Scholar
- 3.A layer is a measure of the areal density in terms of the number of particles required to fill a surface to an areal density that corresponds to bulk particle separation. For bulk 4He the particle density is n = 1 particle/(3.6Å)3. Thus nA = 1/(3.6Å)2 = 7.7 × 1014 part/cm2 is a “layer” of 4He. For 3He one layer corresponds to 6.6 × 1014 part/cm2.Google Scholar
- 6.J. Saunders, C. Luscher, and B.P. Cowan, preprint of LT-19 paper.Google Scholar
- 8.A free standing film, i.e. a film free of a substrate potential to hold it “down”, can be usefully studied as a simple approximation. Such a film is unstable to modes that let it become a lump of material. The most modest substrate potential will stabilize a free standing film.Google Scholar
- 9.This discussion illustrates matters of principle that are robust in the presence of various computational details, as for example in references 13 and 14.Google Scholar
- 12.R.H. Higley, D.T. Sprague, and R.B. Hallock, preprint and submissions to LT-19.Google Scholar
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- 15.R.A. Guyer, Phys. Rev. Lett. 64, 1919. (1990). The model used in this paper admits many possibilities for solid layer-ocean interaction. Here Au captures the essence of what is possible.Google Scholar
- 17.The equation for Amm′ is much more complicated than that for C and D.Google Scholar
- 18.The ocean picture is not required for understandinb,of some of the features being discussed here.Google Scholar