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Contents Ann. Phys. 82010

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Ann. Phys. (Berlin) 522, No. 8, 533 – 535 (2010) / DOI 10.1002/andp.201052208
CONTENTS
Full text on our homepage at
www.ann-phys.org
ORIGINAL PAPERS
Page 536 – 554
Michael Schreiber
Twenty Hirsch index variants and other indicators giving more or
less preference to highly cited papers
The Hirsch index or h-index is
widely used to quantify the impact of an individual’s scientific
research output, determining
the highest number h of a scientist’s papers that received at least
h citations. Several variants of
the index have been proposed in
order to give more or less preference to highly cited papers.
The author analyses the citation
records of 26 physicists
discussing various suggestions, in particular A, e, f , g, h(2), hw , hT , , m, π,
R, s, t, w, and maxprod. The total number of all and of all cited publications
as well as the highest and the average number of citations are also compared.
Advantages and disadvantages of these indices and indicators are discussed.
Correlation coefficients are determined quantifying which indices and indicators yield similar and which yield more deviating rankings of the 26 datasets.
For 6 datasets the determination of the indices and indicators is visualized.
Page 555 – 573
Dinesh Singh and Nader Mobed
Breakdown of Casimir invariance in curved space-time
It is shown that the commonly accepted definition for the Casimir scalar operators of the Poincaré group does not satisfy the properties of Casimir invariance when applied to the non-inertial motion of particles while in the
presence of external gravitational and electromagnetic fields, where general
curvilinear co-ordinates are used to describe the momentum generators within
a Fermi normal co-ordinate framework. Specific expressions of the Casimir
scalar properties are presented. While the Casimir scalar for linear momentum
remains Lorentz invariant in the absence of external fields, this is no longer
true for the spin Casimir scalar. Potential implications are considered for the
propagation of photons, gravitons, and gravitinos as described by the spin3/2 Rarita-Schwinger vector-spinor field. In particular, it is shown that noninertial motion introduces a frame-based effective mass to the spin interaction,
with interesting physical consequences that are explored in detail.
© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
534
Page 574 – 583
Contents
Tomasz Dobrowolski
The studies on the motion of the sine-Gordon kink on a curved
surface
The numerical studies of the kink
motion on a curved manifold were
performed. Examples of the curved
surfaces are considered in detail.
Enlarging the kink width in curved
regions of the surface and reduction
of its speed is confirmed. Reflection of the kink front from the large
curvature areas is observed. The
influence of the curvature on the
speed of the Vachaspati waves is
also observed.
Page 584 – 593
T. A. Zaleski and T. K. Kopeć
Quasi-particle peak due to magnetic order in strongly correlated
electron systems
The authors study the electron spectral
function of the antiferromagnetically ordered phase of the three dimensional Hubbard model, using recently formulated
low-energy theory based on the 2D halffilled Hubbard model which describes
both collective spin and charge fluctuations for arbitrary value of the Coulomb
repulsion U . The model then is solved by
a saddle-point approximation within the
CP1 representation for the Neel field. . . .
Page 594 – 600
Udo Schwingenschlögl and Cono Di Paola
Electronic structure of BaFe2 As2 as obtained from DFT/ASW
first-principles calculations
Ab-initio calculations based on the augmented
spherical wave method within density functional
theory are used to study the magnetic ordering and Fermi surface of BaFe2 As2 , the parent
compound of the hole-doped iron pnictide superconductors (K,Ba)Fe2 As2 , for the tetragonal
I4/mmm as well as the orthorhombic F mmm
structure. In comparison to full potential linear
augmented plane wave calculations, significantly
smaller magnetic energies are obtained. . . .
© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
www.ann-phys.org
Ann. Phys. (Berlin) 522, No. 8 (2010)
535
HISTORICAL ARTICLE
Page 601 – 607
Walter Dittrich
The eastward displacement of a freely falling body on the
rotating Earth: Newton and Hooke’s debate of 1679
In this article the author tells the story
of the beginning of modern theoretical
physics, freed from all kinds of questionable anecdotes which have entered the scientific literature over the centuries. It all
began in the seventeenth century when the
mathematical theory of astronomy began
to take shape. A major step in the history
of modern science was taken when a few
members of The Royal Society in London
realized that the laws ruling the motions
of heavenly bodies as manifested in Kepler’s three laws are also effective in the
dynamics of Earth-bound particle motion.
Everything started, not with I. Newton, but
with R. Hooke. Not Newton’s falling apple
(Voltaire’s invention), but a far-reaching
response by R. Hooke to a letter by I. Newton, dated November 28, 1679, ignited Newton’s interest in gravity. That letter
contained the famous spiral which a falling body would follow when released
from a certain height above the surface of the Earth.. . .
BOOK REVIEW
Page 608 – 610
“DID TIME BEGIN? WILL TIME END? Maybe the Big Bang Never Occurred” by Paul H. Frampton, World Scientific, Singapore 2009,
Reviewer: Friedemann Queisser, Köln
Annalen der Physik is indexed in Chemical Abstracts Service/SciFinder, COMPENDEX, Current
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Web of Science® , Zentralblatt MATH/Mathematics Abstracts
Recognized by the European Physical Society
www.ann-phys.org
© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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