3D Effects Of The Entropic Force
  This work analyzes the classical statistical mechanics associated to phase-space curves in three dimensions. Special attention is paid to the entropic force. Strange effects like confinement, hard core, and asymptotic freedom are uncovered. Negative specific heats, that were previously seen to emerge in a one-dimensional setting, disappear in 3D, and with them, gravitational effects of the entropic force. 
A. Plastino, M. C. Rocca and G. L. Ferri
cond-mat.stat-mech math-ph math.MP physics.class-ph