“…A d , t isobar such as those in Figure is shown schematically as the solid curve in Figure . The dashed curve shows that this one-dimensional system is “trying” to undergo a liquid−vapor phase transition, which it fails to do because of the low dimensionality, but at low and high temperatures, it imitates realistically a liquid and its equilibrium vapor . At extremely low temperatures, not visible in Figure but shown in Figure , the liquid density rapidly rises from d = 0.8 to d = 1, where the liquid is then frozen into its close-packed structure.…”