BROWSE

Related Scientist

Kadota, Kenji's photo.

Kadota, Kenji
순수물리이론 연구단
more info

ITEM VIEW & DOWNLOAD

Trans-Planckian Censorship and single-field inflaton potential

Cited 0 time in webofscience Cited 0 time in scopus
67 Viewed 0 Downloaded
Title
Trans-Planckian Censorship and single-field inflaton potential
Author(s)
Kenji Kadota; Chang Sub Shin; Takahiro Terada; Gansukh Tumurtushaa
Publication Date
2020-01
Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v.2020, no.1, pp.008
Publisher
IOP PUBLISHING LTD
Abstract
© 2020 IOP Publishing Ltd and Sissa Medialab. It was recently proposed that a field theory cannot be consistent with quantum gravity if it allows a mode shorter than the Planck length to exit the Hubble horizon. This is called the Trans-Planckian Censorship Conjecture (TCC). We discuss the implications of the TCC on the possible shape of the inflaton potential in single-field slow-roll inflation. We point out that (1) there is generically an initial condition in which the total e-folding number Ntotal is doubled or more compared to the e-folds necessary for the cosmic microwave background fluctuations, and (2) a sizable negative running of spectral index is generically expected to make Ntotal small. In concrete setups, we find a stringent constraint on the inflationary energy scale, V1/4 inf ≤ O(10) TeV with r ≤ O(10-50), and the running parameter is bounded above as as ≤ -4 × 10-
URI
https://pr.ibs.re.kr/handle/8788114/8423
DOI
10.1088/1475-7516/2020/01/008
ISSN
1475-7516
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse