Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point: A Many-Body Approach
Figure 2
Qualitative phase diagram of CPFM with short-range interactions for , close to the zero-temperature critical point. The line marks the crossover between the regimes (region ) and (region ) increasing . The lines and , symmetric with respect to the vertical line , signal the crossovers among the subregimes , and . Finally, the heavy line OP represents the zero-temperature-ordered phase.
