DBI inflation inN=1supergravity

Michael Koehn, Jean-Luc Lehners, Burt A. Ovrut
<span title="2012-12-07">2012</span> <i title="American Physical Society (APS)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/chloqzh6grayjgjxdzjq5ktthu" style="color: black;">Physical Review D</a> </i> &nbsp;
It was recently demonstrated that, when coupled to N=1 supergravity, the Dirac-Born-Infeld (DBI) action constructed from a single chiral superfield has the property that when the higher-derivative terms become important, the potential becomes negative. Thus, DBI inflation cannot occur in its most interesting, relativistic regime. In this paper, it is shown how to overcome this problem by coupling the model to one or more additional chiral supermultiplets. In this way, one obtains effective
more &raquo; ... e real scalar field DBI models with arbitrary positive potentials, as well as multiple real scalar field DBI inflation models with hybrid potentials.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physrevd.86.123510">doi:10.1103/physrevd.86.123510</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/6fteymtrvvarri5okxt2j7p6au">fatcat:6fteymtrvvarri5okxt2j7p6au</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170921231418/http://pubman.mpdl.mpg.de/pubman/item/escidoc:1560332/component/escidoc:1560331/1208.0752" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/db/ad/dbadaee8441d504c45adb61fbd0d613cf171008f.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physrevd.86.123510"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> aps.org </button> </a>