Research news on Phase transitions

Phase transitions as a research area investigates qualitative changes in the macroscopic state of matter or systems as control parameters such as temperature, pressure, or external fields are varied, with emphasis on critical phenomena, universality, and order-parameter behavior. It encompasses equilibrium and nonequilibrium transitions, including first- and second-order transitions, symmetry breaking, renormalization-group theory, and scaling laws. The field spans condensed matter physics, statistical mechanics, and interdisciplinary complex systems, using analytical, numerical, and experimental methods to characterize phase diagrams, critical exponents, collective excitations, and emergent structures, and to understand how microscopic interactions give rise to distinct thermodynamic or dynamical phases.

The depths of Neptune and Uranus may be 'superionic'

The interiors of ice giant planets like Uranus and Neptune could be home to a previously unknown state of matter, according to new computational simulations by Carnegie's Cong Liu and Ronald Cohen. Their work, published in ...

X-ray lasers enable the discovery of a critical point in water

Using X-ray lasers, researchers at Stockholm University have been able to determine the existence of a critical point in supercooled water at around -63 °C and 1,000 atmospheres. Ordinary water at higher temperatures and ...

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