Toward a Theory of Nonlinear Effects in the Ionosphere

Грач, С. М.; Litvak, A. G.; Mityakov, N. A.; Rapoport, V. O.; Trakhtengerts, V. Yu.

doi:10.1070/pu1975v017n04abeh004653

Cited by 17 publications

(25 citation statements)

References 1 publication

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“…The agreement of our calculations with the experimental data, as well as with some other calculations carried out in the framework of meson-nucleon dynamics (see e.g. [7]- [27]), shows that the deuteron structure at small distances is understood rather well within this theoretical framework. It is a remarkable fact that probing distances of the order of 0.1 fm, at which quarks effects should manifest themselves in their full glory, could be accounted by the relativistic nucleon-meson dynamics and the phenomenological nucleon form factors.…”

Section: Resultssupporting

confidence: 85%

“…The factor V stands for the meson-nucleon vertex at the upper and lower lines. The factor (−U cφ ′ µ ) appears from relation (7). Taking again into account the fact that U ck t = −kU c we get:…”

Section: The Contact Interactionmentioning

confidence: 98%

“…We mention also few other approaches to calculate the relativistic wave function and the deuteron electromagnetic form factors. In the standard version of LFD, defined on the plane t + z = 0, these form factors were calculated in [7][8][9][10]. The results obtained in [11,12] are based on the Bethe-Salpeter approach and the works [13,14] use a three-dimensional reduction of the Bethe-Salpeter function -the Gross wave function [15].…”

Section: Introductionmentioning

confidence: 99%

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Deuteron electromagnetic form factors in the light-front dynamics

Carbonell¹,

Karmanov

2000

Nuclear Physics A

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The deuteron form factors are calculated in the framework of the relativistic nucleonmeson dynamics, by means of the explicitly covariant light-front approach. The inflluence of the nucleon electromagnetic form factors is discussed. At Q 2 ≤ 3 (GeV/c) 2 the prediction for the structure function A(Q 2 ) and for the tensor polarization observable t 20 are in agreement with the recent data of CEBAF/TJNAF.

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Section: Resultssupporting

confidence: 85%

Section: The Contact Interactionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Deuteron electromagnetic form factors in the light-front dynamics

Carbonell¹,

Karmanov

2000

Nuclear Physics A

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“…We explicitly calculate the Feynman one-loop triangle diagram for two different couplings of the fermions to the vector particle. In [5] it has been shown that the current component j + of this spin-one system violates the requirements of covariance, parity and gauge invariance, the so called "angular condition" [13][14][15][16], when the naive Cauchy integration is performed in the triangle diagram for q + = 0. A complete elimination of the pairs created out or annihilating into the vacuum was believed to be possible, leading to a description in terms of a two-particle light-front wave-function [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Covariance of light-front models: pair current

Melo¹,

Frederico²,

Naus³

et al. 1999

Nuclear Physics A

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We compute the + component, i.e., j + = j 0 + j 3 , of the electromagnetic current of a composite spin-one two-fermion system for vanishing momentum transfer component q + = q 0 + q 3 . In particular, we extract the nonvanishing pair production amplitude on the light-front. It is a consequence of the longitudinal zero momentum mode, contributing to the light-front current in the Breit-frame. The covariance of the current is violated, if such pair terms are not included in its matrix elements. We illustrate our discussion with some numerical examples.

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“…The formalism of the P-matrix, suggested by Jaffe and Low [1], is widely used at present for the analysis of experimental data in hadron-hadron collisions [1,[3][4][5][6][7]. The P-matrix is of a fundamental significance due to the fact that its poles are related to the discrete bag states.…”

Section: Introductionmentioning

confidence: 99%