1,335 research outputs found
Post freeze-out annihilations in the early universe
We investigate the possible effect of the residual annihilations of heavy
particles after freeze-out from equilibrium in the early universe. An error in
previous work on this subject is pointed out and the correct method of solving
the Boltzmann equation for this case is developed. For Majorana particles there
are significant differences relative to previous work.Comment: 5 pages REVTEX, to appear in Phys. Lett.
Study of the winter 2005 Antarctica polar vortex
During winter and springtime, the flow above Antarctica at high altitude
(upper troposphere and stratosphere) is dominated by the presence of a vortex
centered above the continent. It lasts typically from August to November. This
vortex is characterized by a strong cyclonic jet centered above the polar high.
In a recent study of our group (Hagelin et al., 2008) of four different sites
in the Antarctic internal plateau (South Pole, Dome C, Dome A and Dome F), it
was made the hypothesis that the wind speed strength in the upper atmosphere
should be related to the distance of the site to the center of the Antarctic
polar vortex. This high altitude wind is very important from an astronomical
point of view since it might trigger the onset of the optical turbulence and
strongly affect other optical turbulence parameters. What we are interested in
here is to localize the position of the minimum value of the wind speed at high
altitude in order to confirm the hypothesis of Hagelin et al. (2008).Comment: 3rd ARENA conference, 11-15 May 2009 EAS Publication Serie
Inclusive CP Asymmetries in Semileptonic Decays of B Mesons
We estimate the sensitivity of single lepton CP violation measurements with
respect to that of traditional di-lepton measurements. We find that the
sensitivity of the single lepton method is better than that of the di-lepton
method. The achievable sensitivity with the currently available data is already
in the range relevant to standard model predictions. We also give general
expressions for inclusive decay time distributions on where the
other is not measured, which will be used to obtain time dependent
asymmetries. The expression is of general use whenever one deals with inclusive
time-dependent as well as time-integrated measurements in where the final state of the other is not reconstructed or
when only the time difference is measured.Comment: 7 pages, 1 figure. Two references added, and a few typos correcte
A dedicated tool for a full 3D Cn2 investigation
We present in this study a mapping of the optical turbulence (OT) above
different astronomical sites. The mesoscale model Meso-NH was used together
with the Astro-Meso-Nh package and a set of diagnostic tools allowing for a
full 3D investigation of the Cn2. The diagnostics implemented in the
Astro-Meso-Nh, allowing for a full 3D investigation of the OT structure in a
volumetric space above different sites, are presented. To illustrate the
different diagnostics and their potentialities, we investigated one night and
looked at instantaneous fields of meteorologic and astroclimatic parameters. To
show the potentialities of this tool for applications in an Observatory we ran
the model above sites with very different OT distributions: the antarctic
plateau (Dome C, Dome A, South Pole) and a mid-latitude site (Mt. Graham,
Arizona). We put particular emphasis on the 2D maps of integrated astroclimatic
parameters (seeing, isoplanatic angles) calculated in different slices at
different heights in the troposhere. This is an useful tool of prediction and
investigation of the turbulence structure. It can support the optimization of
the AO, GLAO and MCAO systems running at the focus of the ground-based
telescopes.From this studies it emerges that the astronomical sites clearly
present different OT behaviors. Besides, our tool allowed us for discriminating
these sites.Comment: 7 pages, 5 figures, SPIE 2010 conferenc
BEYOND MIRACLES: THE DISCOVERY OF THE UNIFIED FIELD AND ITS PRACTICAL APPLICATIONS TO PREVENT CRIME, TERRORISM, AND INTERNATIONAL CONFLICT
The lawst, most profound discoveries of quantum physics provide deep insight into ultimate reality, and how we create our own day-to-day reality. \'('e must now harness this cuning-edge knowledge to create a peaceful, harmoniolls, more enlightened world. For this purpose, intellectual discllssion is not enough. Only direct, repeatahle experience of ultimate reality can create the deep, lasting transformations in the individual and sockty so urgently needed today. Recent breakthroughs in quantum physics reveal the ultimate reality: the "unified field"-the field of universal intelligence at the hasis of mind and matter. The unified field is the fountainhead of all the laws of nature-the source of all the order displayed throughout the vast cosmos. Human awareness can directly experience and access this field of universal intelligence using advanced meditation techniques derived from the ancient Vedic wisdom. This fundamental experience of "pure consciousness" represents a fourth major state of consciousness, distinct from waking. dreaming and deep sleep. In this higher state of consciousness, human awareness becomes aligned with cosmic intelligence: thoughts and actions become powerfully dfective-life supporting and globally enriching. Such "enlightened" individuals are peacemakers by nawre. radiating peace and harmony throughout their environment. New research reveals that enlighrenment, the full developmcnr of human potential. is our birthright-a spontaneous byproduct of integrated brain functioning. New research also reveals the existence of longrange "field effects" of consciollsness generated through collective meditation. More than 50 studies have shown that such field effects of consciousness have a profound impact on society as a whole, defusing acute socieral stress. violence and conflict, and providing a practical fi)undation for pt'rmanent world peace. \'(,'e are thus on the threshold of a global transfilrmation to a post-dual, unified field-bast-d civilization of affluence and peace based on the knowledge, and direct experience, of the core unity of lite in higher states of consciousness
BEYOND MIRACLES: THE DISCOVERY OF THE UNIFIED FIELD AND ITS PRACTICAL APPLICATIONS TO PREVENT CRIME, TERRORISM, AND INTERNATIONAL CONFLICT
The lawst, most profound discoveries of quantum physics provide deep insight into ultimate reality, and how we create our own day-to-day reality. \'('e must now harness this cuning-edge knowledge to create a peaceful, harmoniolls, more enlightened world. For this purpose, intellectual discllssion is not enough. Only direct, repeatahle experience of ultimate reality can create the deep, lasting transformations in the individual and sockty so urgently needed today. Recent breakthroughs in quantum physics reveal the ultimate reality: the "unified field"-the field of universal intelligence at the hasis of mind and matter. The unified field is the fountainhead of all the laws of nature-the source of all the order displayed throughout the vast cosmos. Human awareness can directly experience and access this field of universal intelligence using advanced meditation techniques derived from the ancient Vedic wisdom. This fundamental experience of "pure consciousness" represents a fourth major state of consciousness, distinct from waking. dreaming and deep sleep. In this higher state of consciousness, human awareness becomes aligned with cosmic intelligence: thoughts and actions become powerfully dfective-life supporting and globally enriching. Such "enlightened" individuals are peacemakers by nawre. radiating peace and harmony throughout their environment. New research reveals that enlighrenment, the full developmcnr of human potential. is our birthright-a spontaneous byproduct of integrated brain functioning. New research also reveals the existence of longrange "field effects" of consciollsness generated through collective meditation. More than 50 studies have shown that such field effects of consciousness have a profound impact on society as a whole, defusing acute socieral stress. violence and conflict, and providing a practical fi)undation for pt'rmanent world peace. \'(,'e are thus on the threshold of a global transfilrmation to a post-dual, unified field-bast-d civilization of affluence and peace based on the knowledge, and direct experience, of the core unity of lite in higher states of consciousness
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