Document Detail


Naturalness in an emergent analogue spacetime.
MedLine Citation:
PMID:  16712144     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Effective field theories (EFTs) have been widely used as a framework in order to place constraints on the Planck suppressed Lorentz violations predicted by various models of quantum gravity. There are, however, technical problems in the EFT framework when it comes to ensuring that small Lorentz violations remain small--this is the essence of the "naturalness" problem. Herein we present an "emergent" spacetime model, based on the "analogue gravity" program, by investigating a specific condensed-matter system. Specifically, we consider the class of two-component BECs subject to laser-induced transitions between the components, and we show that this model is an example for Lorentz invariance violation due to ultraviolet physics. Furthermore, our model explicitly avoids the naturalness problem, and makes specific suggestions regarding how to construct a physically reasonable quantum gravity phenomenology.
Authors:
Stefano Liberati; Matt Visser; Silke Weinfurtner
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Publication Detail:
Type:  Journal Article     Date:  2006-04-17
Journal Detail:
Title:  Physical review letters     Volume:  96     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-05-22     Completed Date:  2006-06-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  151301     Citation Subset:  -    
Affiliation:
International School for Advanced Studies and INFN, Via Beirut 2-4, 34014 Trieste, Italy. liberati@sissa.it
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