Results 11 to 20 of about 5,504,773 (297)
Open-boundary conditions in the deconfined phase [PDF]
European Physical Journal C: Particles and Fields, 2019 In this work, we consider open-boundary conditions at high temperatures, as they can potentially be of help to measure the topological susceptibility. In particular, we measure the extent of the boundary effects at $$T=1.5T_c$$ T=1.5Tc and $$T=2.7T_c$$ T=
Adrien Florio +2 more
doaj +7 more sources
Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary [PDF]
, 2007 Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick +2 more
core +7 more sources
Nucleation of Grain Boundary Phases [PDF]
Physical Review Letters, 2022 We derive a theory that describes homogeneous nucleation of grain boundary (GB) phases. Our analysis takes account of the energy resulting from the GB phase junction, the line defect separating two different GB structures, which is necessarily a dislocation as well as an elastic line force due to the jump in GB stresses.
I. S. Winter +3 more
openaire +3 more sources
Degenerate metric phase boundaries [PDF]
Classical and Quantum Gravity, 1997 The structure of boundaries between degenerate and nondegenerate solutions of Ashtekar's canonical reformulation of Einstein's equations is studied. Several examples are given of such "phase boundaries" in which the metric is degenerate on one side of a null hypersurface and non-degenerate on the other side.
Bengtsson, I., Jacobson, T.
openaire +4 more sources
Automatic learning of topological phase boundaries [PDF]
Physical Review E, 2021 Topological phase transitions, which do not adhere to Landau's phenomenological model (i.e. a spontaneous symmetry breaking process and vanishing local order parameters) have been actively researched in condensed matter physics. Machine learning of topological phase transitions has generally proved difficult due to the global nature of the topological ...
Kerr, Alexander +3 more
openaire +3 more sources
The phase structure of grain boundaries [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018 This article discusses numerical and analytical results on grain boundaries, which are line defects that separate roll patterns oriented in different directions. The work is set in the context of a canonical pattern-forming system, the Swift–Hohenberg (SH) equation, and of its phase diffusion equation, the regularized Cross–Newell equation.
Nicholas M. Ercolani +2 more
openaire +4 more sources
Grain-boundary topological phase transitions [PDF]
Proceedings of the National Academy of Sciences, 2020 Significance We reveal the existence of a topological phase transition (Kosterlitz–Thouless type) in grain boundaries (GBs)—important internal surfaces in crystalline materials. GB dynamics are controlled by the formation/migration of line defects (disconnections) with dislocation and step character.
Kongtao Chen +2 more
openaire +4 more sources
One dimensional parabolic free boundary problems [PDF]
, 1975 The method of lines is used to approximate explicit and implicit free boundary problems for a linear one dimensional diffusion equation with a sequence of free boundary problems for ordinary differential equations.
Meyer, G H
core +4 more sources
Domain variance and superstructure across the antiferroelectric/ferroelectric phase boundary in Pb1−1.5xLax(Zr0.9TiM0.1)O3 [PDF]
, 2003 Transmission electron microscopy, x-ray diffraction, relative permittivity as a function of temperature, and polarization versus field loops were used to study the antiferroelectric/ferroelectric (AFE/FE) phase boundary in Pb1−1.5xLaxZr0.9Ti0.1O3 ...
Woodward, David I. +2 more
core +1 more source
Comments on the boundary scattering phase
Journal of High Energy Physics, 2008 14 pages, 2 figures; v2: affiliation ...
Chen, Heng-Yu, Correa, Diego H.
openaire +2 more sources