Thermodynamics of Negative-Temperature Equilibria in Guiding-Center Plasmas.
NAVAL RESEARCH LAB WASHINGTON D C
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The sinh-Poisson equation describing two-dimensional steady state distributions of elements with a logarithmic interaction potential charged filaments executing guiding center motion quantized vortex lines or rotons is solved numerically. Multiple solutions are obtained for the case of negative temperatures. These have a simple thermodynamic interpretation which agrees with the results of numerical simulations. The results are related to numerical experiments and observations of vortex filaments in liquid He4.
- Quantum Theory and Relativity