Document Detail


Does the planck mass run on the cosmological-horizon scale?
MedLine Citation:
PMID:  18517773     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Einstein's theory of general relativity contains a universal value of the Planck mass. However, one may envisage that in alternative theories of gravity the effective value of the Planck mass (or Newton's constant), which quantifies the coupling of matter to metric perturbations, can run on the cosmological-horizon scale. In this Letter, we study the consequences of a glitch in the Planck mass from subhorizon to superhorizon scales. We show that current cosmological observations severely constrain this glitch to less than 1.2%.
Authors:
Georg Robbers; Niayesh Afshordi; Michael Doran
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-03-18
Journal Detail:
Title:  Physical review letters     Volume:  100     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-06-03     Completed Date:  2008-06-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  111101     Citation Subset:  -    
Affiliation:
Institut für Theoretische Physik, Philosophenweg 16, 69120 Heidelberg, Germany. robbers@thphys.uni-heidelberg.de <robbers@thphys.uni-heidelberg.de>
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