tricritical point

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• Tricritical point — A tricritical point is a point in the phase diagram of a system at which three phase coexistence terminates [B. Windom, Theory of Phase Equilibrium , J. Phys. Chem 1996, 13190 13199] . This definition is clearlyparallel to the definition of an… …   Wikipedia

• Multicritical point — Multicritical points are special points in the parameter space of thermodynamic or other systems with a continuous phase transition. At least two thermodynamic or other parameters must be adjusted to reach a multicritical point. At a… …   Wikipedia

• Critical point (thermodynamics) — Carbon dioxide creating a fog when cooling from supercritical to critical temperature In physical chemistry, thermodynamics, chemistry and condensed matter physics, a critical point, also called a critical state, specifies the conditions… …   Wikipedia

• Critical line (thermodynamics) — In thermodynamics, a critical line is the higher dimensional equivalent of a critical point [1]. It is the locus of contiguous critical points in a phase diagram. These lines cannot occur for a single substance due to the phase rule, but they can …   Wikipedia

• Superconductivity — is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).The electrical resistivity of a metallic …   Wikipedia

• Hagen Kleinert — (born 1941) is Professor of Theoretical Physics at the Free University of Berlin, Germany (since 1968), Honorary Professor at the Kyrgyz Russian Slavic University, and Honorary Member of the [http://www.physik.fu berlin.de/… …   Wikipedia

• Critical dimension — For the minimum feature size in photolithography, see Photolithography. In the renormalization group analysis of phase transitions in physics, a critical dimension is the dimensionality of space at which the character of the phase transition… …   Wikipedia

• Inner core — Earth cutaway from core to exosphere. Partially to scale. The inner core of the Earth, its innermost hottest part as detected by seismological studies, is a primarily solid ball about 1,220 km (760 mi) in radius,[1] …   Wikipedia

• Coleman-Weinberg potential — The Coleman Weinberg model represents quantum electrodynamics of a scalar field in four dimensions. The Lagrangian for the model isL = frac{1}{4} (F {mu u})^2 + (D {mu} phi)^2 m^2 phi^2 frac{lambda}{6} phi^4where the scalar field is complex, F… …   Wikipedia

• Coleman–Weinberg potential — The Coleman–Weinberg model represents quantum electrodynamics of a scalar field in four dimensions. The Lagrangian for the model is where the scalar field is complex, is the electromagnetic field tensor, and the covariant derivative containing… …   Wikipedia