58,086 research outputs found
Explaining Phenomenologically Observed Space-time Flatness Requires New Fundamental Scale Physics
The phenomenologically observed flatness - or near flatness - of spacetime
cannot be understood as emerging from continuum Planck (or sub-Planck) scales
using known physics. Using dimensional arguments it is demonstrated that any
immaginable action will lead to Christoffel symbols that are chaotic. We put
forward new physics in the form of fundamental fields that spontaneously break
translational invariance. Using these new fields as coordinates we define the
metric in such a way that the Riemann tensor vanishes identically as a Bianchi
identity. Hence the new fundamental fields define a flat space. General
relativity with curvature is recovered as an effective theory at larger scales
at which crystal defects in the form of disclinations come into play as the
sources of curvature.Comment: This article were already in 2011 published as Proceedings of the
14th Bled Conference on "What Comes Beyond the Standard Models" organized by
Norma Manko Borstnik, Dragan Lukman, Maxim Khlopov, and H.B. Nielse
Products of Random Matrices
We derive analytic expressions for infinite products of random 2x2 matrices.
The determinant of the target matrix is log-normally distributed, whereas the
remainder is a surprisingly complicated function of a parameter characterizing
the norm of the matrix and a parameter characterizing its skewness. The
distribution may have importance as an uncommitted prior in statistical image
analysis.Comment: 9 pages, 1 figur
Fermion and Higgs Masses and the AGUT Model
We present two rather differently based predictions for the quark and lepton
spectrum: One provides a rather successful fit to the mass suppressions---the
well known fermion mass hierarchy---interpreted as due to most mass terms
needing to violate approximately conserved quantum numbers corresponding to the
AGUT group . This is actually, under certain conditions,
the maximal group transforming the known 45 Weyl components of the quark and
leptons into each other. From the fit to the fermion spectrum, we get a picture
of the series of Higgs fields causing the breakdown (presumably at the Planck
scale) of this AGUT to the Standard Model and, thus, providing the small masses
of all quarks and leptons except for the top quark. We separately predict the
top quark mass to be GeV and the Higgs mass to be GeV,
from the assumption that there be two degenerate minima in the effective
potential for the Weinberg Salam Higgs field with the second one at the Planck
field strength.Comment: 6 page LaTeX file plus 1 postscript figure and aipproc style file,
uses epsfig.sty; to appear in the Proceedings of Beyond the Standard Model V,
Balholm, Norway, 29 April - 4 May 199
Remarkable coincidence for the top Yukawa coupling and an approximately massless bound state
We calculate, with several corrections, the non-relativistic binding by Higgs
exchange and gluon exchange between six top and six anti-top quarks (actually
replaced by left-handed b quarks from time to time). The remarkable result is
that, within our calculational accuracy of the order of 14% in the top quark
Yukawa coupling g_t, the experimental running top-quark Yukawa coupling g_t =
0.935 happens to have just that value which gives a perfect cancellation of the
unbound mass = 12 top-quark masses by this binding energy. In other words the
bound state is massless to the accuracy of our calculation. Our calculation is
in disagreement with a similar calculation by Kuchiev et al., but this
deviation may be explained by a phase transition. We and Kuchiev et al. compute
on different sides of this phase transition.Comment: 68 pages, 3 figures; published version, including a discussion of the
results of Ref. (5) and the new Appendix
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