Mayikés ikónes

Friar, Kimon; Anaghnostáki, Nóra

doi:10.2307/40129170

Cited by 30 publications

(64 citation statements)

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“…7T 77, 7T (2) and I, ; are the Gell-Mann matrices. Chiral SU(3) I X SU(3)tt invariance is dynamically broken to SU(3) i, and Goldstone's theorem requires the existence of eight Goldstone bosons which are identified with n, E, and g (Ref. 4).…”

Section: Introductionmentioning

confidence: 99%

“…A corollary of this is that the scale dependence is not important either. (2) The theories which we are exploring yield predictions for the tree-level coefficients. Given these comments made in case (1) …”

Section: Introductionmentioning

confidence: 99%

“…The inclusion of quark mass introduces a small explicit breaking of the chiral symmetry, which can be accounted for via a perturbative expansion in the energy. In this paper all of the processes that we study only involve chiral SU (2) iL9Tr(F"+-"UD Ut+F +"U D "U)+L,OTr(F""UF"' U )+L»TrF"F""+L, 2Trm…”

Section: Introductionmentioning

confidence: 99%

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Pion transitions and models of chiral symmetry

Donoghue

Holstein

1989

Phys. Rev. D

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We describe a set of pion-decay and scattering amplitudes which are described by only two lowenergy parameters in the effective chiral Lagrangian of QCD. After a phenomenological analysis of the data, we demonstrate how the effective-Lagrangian framework correlates the many predictions of these reactions which have been made in the literature using a variety of models with chiral symmetry. A comparison with the data then also determines which model represents @CD. Not surprisingly, the winner is a form of vector dominance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pion transitions and models of chiral symmetry

Donoghue

Holstein

1989

Phys. Rev. D

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“…For all these reasons, we have relegated them to Appendix A. The constraints of gauge invariance are crucial to impose (the results are infrared divergent otherwise), but are also tedious to develop, although they have been known for decades [15]. Consequently, a brief presentation of the necessary relations has been relegated to Appendix B.…”

Section: Higher Polarizabilitiesmentioning

confidence: 99%

“…We first define the electric polarizability [15,16], α E , in terms of the electric-dipole operator, D,…”

Section: Higher Polarizabilitiesmentioning

confidence: 99%

Higher-order nuclear-polarizability corrections in atomic hydrogen

Friar

Payne

1997

Phys. Rev. C

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Nuclear-polarizability corrections that go beyond unretarded-dipole approximation are calculated analytically for hydrogenic (atomic) S-states. These retardation corrections are evaluated numerically for deuterium and contribute -0.68 kHz, for a total polarization correction of 18.58(7) kHz. Our results are in agreement with one previous numerical calculation, and the retardation corrections completely account for the difference between two previous calculations. The uncertainty in the deuterium polarizability correction is substantially reduced. At the level of 0.01 kHz for deuterium, only three primary nuclear observables contribute: the electric polarizability, α E , the paramagnetic susceptibility, β M , and the third Zemach moment, r 3 (2) . Cartesian multipole decomposition of the virtual Compton amplitude and its concomitant gauge sum rules are used in the analysis.

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Dispersive effects for the nuclear paramagnetic susceptibility

Christillin

Richter

1987

Z. Physik A - Atomic Nuclei

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Dedicated to Professor Friedrich Beck on the occasion of his 60th birthday Dispersive effects coming from pionic degrees of freedom (virtual magnetic pion photoproduction) are shown to reproduce the nucleonic magnetic susceptibility and to yield a parallel quenching in nuclei. The relative importance of low lying nuclear vs. A-excitations is discussed and the difference of their role for the magnetic and electric polarizability is pointed out.

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Mayikés ikónes

Cited by 30 publications

References 0 publications

Pion transitions and models of chiral symmetry

Pion transitions and models of chiral symmetry

Higher-order nuclear-polarizability corrections in atomic hydrogen

Dispersive effects for the nuclear paramagnetic susceptibility

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