2000/09/22 by B. Jancovici
Physics and Astronomy · #cond-mat.stat-mech
published as J.Stat.Phys 102 (2001) 1315 · 16 pages, to be published in J.Stat.Phys
arxiv created 2000/09/22 · arxiv updated 2009/11/30
Systems of particles interacting through a screened Coulomb potential of the Debye-Yukawa form are considered. The pressure is obtained from the stress tensor of the field corresponding to the Yukawa interaction, by a suitable statistical average. This approach is especially appropriate for systems living in a curved space. In a curved space, a self contribution to the pressure appears, and it is essential to take it into account for retrieving a correct pressure when the Yukawa interaction tends to the Coulomb interaction.