763 research outputs found
Distribution of Dark Matter around a Central Body, Pioneer Effect and Fifth Force
Within the framework of the Projective Unified Field Theory the distribution
of a dark matter gas around a central body is calculated. As a result the
well-known formulas of the Newtonian gravitational interaction are altered.
This dark matter effect leads to an additional radial force (towards the
center) in the equation of motion of a test body, being used for the
explanation of the so-called ``Pioneer effect'', measured in the solar system,
but without a convincing theoretical basis up to now. Further the relationship
of the occurring new force to the so-called ``fifth force'' is discussed.Comment: 11 pages, 7 figures, LaTe
Field Equations and Equations of Motion in Post-Newtonian Approximation of the Projective Unified Field Theory
The equations of motion of gravitationally bound bodies are derived from
the field equations of Projective Unified Field Theory. The Newtonian and the
post-Newtonian approximations of the field equations and of the equations of
motion of this system of bodies are studied in detail. In analyzing some
experimental data we performed some numeric estimates of the ratio of the
inertial mass to the scalaric mass of matter.Comment: 17 page
On the Axiomatics of the 5-dimensional Projective Unified Field Theory of Schmutzer
For more than 40 years E.Schmutzer has developed a new approach to the
(5-dimensional) projective relativistic theory which he later called Projective
Unified Field Theory (PUFT). In the present paper we introduce a new axiomatics
for Schmutzer's theory. By means of this axiomatics we can give a new
geometrical interpretation of the physical concept of the PUFT.Comment: 32 pages, 1 figure, LaTeX 2e, will be submitted to Genaral Relativity
and Gravitatio
Bericht zur sozialen Lage der Studierenden.
aus dem Inhaltsverzeichnis: Einleitung; Die quantitative Entwicklung des Hochschulsektors in den neunziger Jahren; Regionale Herkunft; Soziale Herkunft; Familienstand; Studieren mit Kind; Wohnsituation; Erwerbstätigkeit; Finanzielle Situation; BezieherInnen von Studienbeihilfe; Verkehrsmittel und Fahrtkosten; Studierende an Fachhochschul-Studiengängen; Studierende im Zweit- oder Doktoratsstudium; Zusammenfassung; Anhang
Bewirtschaftungsfreie Zeitfenster für den Naturschutz - Auswirkung auf die N2-Fixierleistung von Luzernebeständen
We studied the effect of a mulching regime optimised with respect to nature conserva-tion on yield and nitrogen fixation rate of Lucerne. The first harvest was two weeks earlier and the second harvest was two weeks later than usual. At the first harvest in 2004, the shoot yield from the nature conservation variant was significantly lower than the yield from the usual treatment. At the second harvest date in 2004, there where no differences. The total nitrogen fixation in 2004 did not differ between the treatments. In 2005, both shoot yield and total nitrogen fixation showed no differences between the two variants as well. From this study it can be concluded that a displacement of mulching dates of Lucerne in most cases will have no significant effect on the total nitrogen fixation and percentage of N derived from the air. A negative effect, like at the first harvest in 2004, is only to be expected if weather conditions are moist until the first harvest and extremely dry further on until the second harvest. The results were used in recommendations for the agricultural practice to diminish the mortality rate of wild game and were regarded in the agricultural legislation in Austria
Gravitational Couplings of Intrinsic Spin
The gravitational couplings of intrinsic spin are briefly reviewed. A
consequence of the Dirac equation in the exterior gravitational field of a
rotating mass is considered in detail, namely, the difference in the energy of
a spin-1/2 particle polarized vertically up and down near the surface of a
rotating body is . Here is the latitude and
, where and are, respectively, the angular
momentum and radius of the body. It seems that this relativistic quantum
gravitational effect could be measurable in the foreseeable future.Comment: LaTeX file, no figures, 16 page
New model of angular momentum transfer from the rotating central body of a two-body system into the orbital motion of this system (with application to the earth-moon system)
In a previous paper we treated within the framework of our Projective Unified
Field Theory (Schmutzer 2004, Schmutzer 2005a) the 2-body system (e.g.
earth-moon system) with a rotating central body in a rather abstract manner.
Here a concrete model of the transfer of angular momentum from the rotating
central body to the orbital motion of the whole 2-body system is presented,
where particularly the transfer is caused by the inhomogeneous gravitational
force of the moon acting on the oceanic waters of the earth, being modeled by a
spherical shell around the solid earth. The theory is numerically tested. Key
words: transfer of angular momentum from earth to moon, action of the
gravitational force of the moon on the waters of the earth.Comment: 12 pages, 3 figures, LaTe
Entanglement, recoherence and information flow in an accelerated detector - quantum field system: Implications for black hole information issue
We study an exactly solvable model where an uniformly accelerated detector is
linearly coupled to a massless scalar field initially in the Minkowski vacuum.
Using the exact correlation functions we show that as soon as the coupling is
switched on one can see information flowing from the detector to the field and
propagating with the radiation into null infinity. By expressing the reduced
density matrix of the detector in terms of the two-point functions, we
calculate the purity function in the detector and study the evolution of
quantum entanglement between the detector and the field. Only in the ultraweak
coupling regime could some degree of recoherence in the detector appear at late
times, but never in full restoration. We explicitly show that under the most
general conditions the detector never recovers its quantum coherence and the
entanglement between the detector and the field remains large at late times. To
the extent this model can be used as an analog to the system of a black hole
interacting with a quantum field, our result seems to suggest in the prevalent
non-Markovian regime, assuming unitarity for the combined system, that black
hole information is not lost but transferred to the quantum field degrees of
freedom. Our combined system will evolve into a highly entangled state between
a remnant of large area (in Bekenstein's black hole atom analog) without any
information of its initial state, and the quantum field, now imbued with
complex information content not-so-easily retrievable by a local observer.Comment: 16 pages, 12 figures; minor change
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