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Fundamental Interactions in Physics
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This article is published in Journal of Modern Optics.The article was published on 1974-04-01. It has received 14 citations till now.read more
Citations
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Metric affine gauge theory of gravity: Field equations, Noether identities, world spinors, and breaking of dilation invariance
TL;DR: In this article, the authors present explicit models for a symmetry breakdown in the cases of the Weyl (or homothetic) group, the SL(4, R), or the GL(4-R) covering subgroup.
Journal ArticleDOI
Experimental aspects of the study of the interaction of low-energy positrons with gases
T.C Griffith,G.R Heyland +1 more
TL;DR: In this paper, the development of the techniques of producing slow positron beams is traced from the original experiments and applications of such beams to the measurement of cross-sections for positrons interacting in various gases and for the production of positronium in vacuum is discussed in detail.
Journal ArticleDOI
Selective efficiency of vibrational excitations in ion–molecule collisions: A comparison of behavior for H+–H2 and H−–H2
Franco A. Gianturco,Sanjay Kumar +1 more
TL;DR: In this article, the vibrational excitation processes which occur in molecular beam experiments on H2 molecules, and using H+ or H− as projectiles, are discussed from the theoretical viewpoint of the microscopic quantum dynamics and in relation to the various features of the two potential energy surfaces.
Journal ArticleDOI
Electron scattering by nitrogen molecules: Theory and application to elastic scattering and rotational excitation at 30-75 eV
TL;DR: In this article, an effective potential model applicable to electron scattering by small or large molecules, including rotational and vibrational motions, was developed for electron scattering in N2, using the INDO/1s method to calculate the static potential at a large number of distances and a simple model was used for the polarization potential.
Journal ArticleDOI
Long-ray interaction between spins
TL;DR: In this article, it was shown that invariance of Lagrangian field theory under a class of the coordinate-dependent Lorentz group of transformations requires the introduction of a massless axial vector gauge field which gives rise to a super-weak long-range spin-spin force between particles in vacuum.
References
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Journal ArticleDOI
Metric affine gauge theory of gravity: Field equations, Noether identities, world spinors, and breaking of dilation invariance
TL;DR: In this article, the authors present explicit models for a symmetry breakdown in the cases of the Weyl (or homothetic) group, the SL(4, R), or the GL(4-R) covering subgroup.
Journal ArticleDOI
Experimental aspects of the study of the interaction of low-energy positrons with gases
T.C Griffith,G.R Heyland +1 more
TL;DR: In this paper, the development of the techniques of producing slow positron beams is traced from the original experiments and applications of such beams to the measurement of cross-sections for positrons interacting in various gases and for the production of positronium in vacuum is discussed in detail.
Journal ArticleDOI
Close-coupling calculations of differential cross sections for elastic scattering and rotational excitation of hydrogen molecules by electrons at 10 and 40 eV
TL;DR: In this paper, the effective interaction potential was taken as a sum of the static, exchange, and polarization interactions, and good agreement with experiment was obtained for the angle dependences and magnitudes of the differentual cross sections for both pure elastic scattering and rotational excitation except that there are discrepancies in the elastic scattering at small scattering angles.
Journal ArticleDOI
Selective efficiency of vibrational excitations in ion–molecule collisions: A comparison of behavior for H+–H2 and H−–H2
Franco A. Gianturco,Sanjay Kumar +1 more
TL;DR: In this article, the vibrational excitation processes which occur in molecular beam experiments on H2 molecules, and using H+ or H− as projectiles, are discussed from the theoretical viewpoint of the microscopic quantum dynamics and in relation to the various features of the two potential energy surfaces.
Journal ArticleDOI
Electron scattering by nitrogen molecules: Theory and application to elastic scattering and rotational excitation at 30-75 eV
TL;DR: In this article, an effective potential model applicable to electron scattering by small or large molecules, including rotational and vibrational motions, was developed for electron scattering in N2, using the INDO/1s method to calculate the static potential at a large number of distances and a simple model was used for the polarization potential.