Figure 1

Phase diagram for holographic massive gravity showing the Hawking-Page temperature, $T_{\mathrm{HP}}({\mu }^2)$, vs the mass parameter, ${\mu }^2$. The region below the purple line is a confined phase in which the thermal solution dominates the ensemble, while the region above the line is a deconfined phase in which the black hole solution dominates. The line of first-order phase transitions terminates in a second-order phase transition at zero temperature and ${\mu }^2={\mu }_{*}^2=2/L^2$.