Results 311 to 320 of about 81,818 (357)
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Electronic structure of kink and kink-antikink defects in polyacetylene
Physical Review B, 1989The electronic energy levels and charge distribution associated with kink (K) and kink-antikink (K-K\ifmmode\bar\else\textasciimacron\fi{}) defects in polyacetylene have been calculated with use of the first-principles local-density-functional theory.
, Ye, , Freeman, , Ellis, , Delley
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The kink-phonon and the kink-kink interaction in the Φ4model.
Ferroelectrics, 1980Abstract The kink-phonon and kink-antikink interactions are discussed for the continuum Φ4 equation and its discretized version. Similarities and differences between the two approaches are pointed out. The detailed study of the kink-antikink interaction reveals that under certain conditions a long-lived metastable quasibreather state can exist.
R. Klein +3 more
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Physical Review Letters, 1992
Summary: We show that if a change of spatial topology is mediated by a spacetime with an everywhere-non-singular metric of Lorentzian signature which admits a spinor structure, then the Kervaire semicharacteristic of the boundary plus the kink number of the Lorentzian metric on the boundary must vanish modulo 2. The kink number is a measure of how many
Gibbons, G. W., Hawking, S. W.
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Summary: We show that if a change of spatial topology is mediated by a spacetime with an everywhere-non-singular metric of Lorentzian signature which admits a spinor structure, then the Kervaire semicharacteristic of the boundary plus the kink number of the Lorentzian metric on the boundary must vanish modulo 2. The kink number is a measure of how many
Gibbons, G. W., Hawking, S. W.
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General Relativity and Gravitation, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Harriott, Tina A., Williams, J. G.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Harriott, Tina A., Williams, J. G.
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On kinked screw dislocations in the b.c.c. lattice—II. Kink energies and double kinks
Acta Metallurgica, 1983Abstract The self and interaction energies of kinks on screw dislocations in the b.c.c. lattice have been studied by computer simulation, using models representing both potassium and an iron-like material. Both the total energy and the spatial distribution of the energy are considered.
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Journal of Mathematical Physics, 1966
In sufficiently nonlinear field theories there are extended objects whose number is strictly conserved because of continuity of the underlying field as a function of space. We call these kinks. Kinks provide a covariant description of extended but indestructible particles. We give the properties the field theory must possess in order for kinks to exist,
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In sufficiently nonlinear field theories there are extended objects whose number is strictly conserved because of continuity of the underlying field as a function of space. We call these kinks. Kinks provide a covariant description of extended but indestructible particles. We give the properties the field theory must possess in order for kinks to exist,
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American Journal of Obstetrics and Gynecology, 1955
Abstract The case history is presented of a patient who had a ureteral kink during the thirty-ninth week of pregnancy which resulted in marked hydronephrosis. Kinking may occur in pregnancy because of physiologic relaxation and elongation of the ureters.
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Abstract The case history is presented of a patient who had a ureteral kink during the thirty-ninth week of pregnancy which resulted in marked hydronephrosis. Kinking may occur in pregnancy because of physiologic relaxation and elongation of the ureters.
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Quantitative kink boundaries strengthening effect of Mg-Y-Zn alloy containing LPSO phase
Materials Letters, 2021Hidetoshi Somekawa +2 more
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