The quasi-one dimensional hard square gas

J. K. Percus, M. Q. Zhang

Research output: Contribution to journalArticlepeer-review


We consider a fluid of oriented hard squares on a two-dimensional strip. When two squares cannot pass each other, the equilibrium behaviour is similar to that of repulsive cores on a line. However, when the strip is wide enough that two squares can pass, but not three, an exact solution shows that there is already an indication of a thermodynamic singularity coming into being at around 70 per cent of close packing volume.

Original languageEnglish (US)
Pages (from-to)347-355
Number of pages9
JournalMolecular Physics
Issue number2
StatePublished - Feb 10 1990

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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