Results 281 to 290 of about 12,226 (312)

Lattice-Dynamical Theory of Structural Phase Transition in Quartz

Journal of the Physical Society of Japan, 1974
A lattice dynamical theory is developed for the phase transition in quartz, and the behaviours of various quantities in the vicinity of the transition temperature are discussed. At temperatures well away from the transition, these behaviours can be interpreted within the framework of the Landau theory. However, drastic deviations from the theory appear
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Role of lattice structure on the Lindemann fusion theory of metals

Journal of Physics F: Metal Physics, 1982
A simple atomistic model for the fusion process of metals is derived from a combination of the atomic model of the lattices and the simple theory of harmonic vibration of the atoms of A1 (FCC), A2 (BCC) and A3 (HCP) type crystals. The lattice factors Lj of these metals and a new physical quantity rho j identical to Lj delta j= alpha /Lj with j=1, 2 and
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Lattice-ordered Permutation Groups: The Structure Theory

1996
This survey of lattice-ordered permutation groups focuses especially on their structure theory and on their relation to unordered infinite permutation groups. However, the survey is essentially self-contained. The reader will need only a little familiarity with unordered permutation groups, and none at all with lattice-ordered groups.
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Lattice structure of the gluon field condensate in a theory with the Chern-Simons mass

Physical Review D, 1994
In two-dimensional SU(2) gluodynamics with the Chern-Simons mass a ground state in a magnetic field is derived. This vacuum is found to be the lattice of the new type formed from periodic magnetic and electric fields which corresponds to Abrikosov's lattice in superconductivity. It is realized uniquely due to the mass presence.
, Skalozub, , Vilensky, , Zaslavsky
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Phase structure of non-Abelian lattice gauge theories

Physical Review D, 1980
The phase structure of four-dimensional lattice gauge theories based on finite non-Abelian groups is studied by Monte Carlo computations. All models examined exhibit a two-phase structure with a first-order phase transition. In three systems where the gauge group is a discrete subgroup of SU(2) the critical temperature moves toward zero as the order of
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On the lattice structure of torsion theories

Communications in Algebra, 1991
Raggi Francisco, null José Ríos
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The lattice structure of nonhereditary torsion theories

Communications in Algebra, 1998
Rogelio Fernández-Alonso, Francisco Raggi   +1 more
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On the Theory of Super-Lattice Structures in Alloys

Zeitschrift für Kristallographie - Crystalline Materials, 1935
William Hume-Rothery, Herbert M. Powell
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Phase Structure of Finite Temperature Lattice Gauge Theories

1985
The last few years have seen increasing interest in the study of quantum field theories at nonvanishing temperature or density. To a large extent this interest comes from the desire to use the modern particle theories in cosmology, especially in the attempts to understand the very early history of the universe [l,2,3].
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Revival and Expansion of the Theory of Coherent Lattices

Physical Review Letters, 2020
Dmitry Kouznetsov, Qingzhong Deng, Pol Van Dorpe   +2 more
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