منابع مشابه
Science and Belief in a Contingent Universe
In preparing for tonight’s talk, I was impressed upon reading that part of the Cosmos and Creation Mission Statement that acknowledged that scientists often “develop their own cosmology a cosmology that ... is in touch with the feel of contemporary science”. I see that as truly what should be our task in science – each to develop his/her own cosmology, contingent upon one’s own personal experie...
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متن کاملGott-Kaiser-Stebbins (GKS) effect in an accelerated expanding universe
Wewanttofindthecosmologicalconstantinfluenceoncosmicmicrowavebackground(CMB)temperatureduetomovinglinearcosmicstrings.Usingthespace-timemetricofalinearcosmicstringinanacceleratedexpandinguniverse,theGott-Kaiser Stebbins(GKS)effect,asanimportantmechanisminproducingtemperaturediscontinuityinthe(CMB),isconsidered;then,itsmodificationduetotheeffectofthecosmologicalconstantiscalculated.Theresultshowsthat...
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In the current paper, we have studied the effect of dark energy on for-mation where dark energy exists in the background. For this purpose, we used both WMAP9 and Planck data to study how the radius changes with redshift in these mod-els. We used different data sets to fix the cosmological parameters to obtain a solution for a spherical region under collapse. The mechanism of structure formation f...
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Using the usual definitions of information and entropy in quantum gravity and statistical mechanics and the existing views about the relation between information and complexity, we examine the evolution of complexity in an ever expanding universe.
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ژورنال
عنوان ژورنال: Nature
سال: 1979
ISSN: 0028-0836,1476-4687
DOI: 10.1038/278796b0