phase transition

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Related to Second order phase transition: First order phase transition

phase transition

n.
A change in a feature of a physical system, often involving the absorption or emission of energy from the system, resulting in a transition of that system to another state. The melting of ice is a phase transition of water from a solid phase to a liquid phase, requiring energy in the form of heat.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phase transition - a change from one state (solid or liquid or gas) to another without a change in chemical composition
freeze, freezing - the withdrawal of heat to change something from a liquid to a solid
liquefaction - the conversion of a solid or a gas into a liquid
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
melt, melting, thaw, thawing - the process whereby heat changes something from a solid to a liquid; "the power failure caused a refrigerator melt that was a disaster"; "the thawing of a frozen turkey takes several hours"
evaporation, vaporisation, vaporization, vapour, vapor - the process of becoming a vapor
References in periodicals archive ?
It is also known that phase transitions coincide with transitions between dynamical symmetries, with a first order phase transition taking place in the U(5)-SU(3) transition, and a second order phase transition happening in the U(5)-O(6).
These are based originally on particular solutions of the Bohr-Mottelson differential equations, but are usually applied in the context of the IBM [1], since the IBM provides a simple but detailed framework in which first and second order phase transitions can be studied.

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