Lennard-Jones Devonshire Cell Theory: A Cautionary Tale

Condensed Matter lunchtime seminar

Lennard-Jones Devonshire Cell Theory: A Cautionary Tale

  • Event time: 1:00pm
  • Event date: 23rd July 2001
  • Speaker: James Magee (University of Edinburgh)
  • Location: Room 2511,

Event details

I investigate claims by Sadr-Lahijany, et al [1], of evidence for a liquid-liquid phase transition found using a LJD-like cell theory [2]. I will describe this class of theory, and hope to convince you that the interpretation of the earliest cell theory results [2] was flawed. I also hope to show that the extra transition line and critical point found with cell theory in [1] need not represent a liquid-liquid transition at all. [1] Sadr-Lahijany, M.R., Scala, A., Buldyrev, S.V., Stanley, H.E., Phys. Rev. Lett 81, 4895-8 (1998)
[2] Lennard-Jones, J.E., Devonshire, A.F., Proc. Roy. Soc. (London) A163, 53 (1937); A165, 1 (1938); A169, 317 (1939); A170, 464 (1939)

This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..

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