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Novel bounds from the weak gravity and Festina-Lente conjectures

Abu-Ajamieh, Fayez ; Chattopadhyay, Pratik ; Okada, Nobuchika ; Pasechnik, Roman LU and Wang, Zhi Wei (2026) In Physical Review D 113(3).
Abstract

We demonstrate that the weak gravity conjecture (WGC) and the Festina-Lente conjecture (FLC) yield novel bounds on any hypothetical fifth force and millicharged particles (mCPs), as well as on the scale of inflation and on the effective Higgs quartic interaction. In particular, we find that combining the FLC with inflation leads to stronger bounds on mCPs than what the simple application of the FLC provides. Furthermore, we have explored the implications of naturalness on both the FLC and WGC, and have found that these conjectures place a lower limit on the charge of a Uð1Þ gauge group.

Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
113
issue
3
article number
035039
publisher
American Physical Society
external identifiers
  • scopus:105039286998
ISSN
2470-0010
DOI
10.1103/fxm9-6dx9
language
English
LU publication?
yes
id
3b2db46f-d984-491f-b3bb-7923db3cf782
date added to LUP
2026-08-27 12:40:40
date last changed
2026-08-27 12:41:14
@article{3b2db46f-d984-491f-b3bb-7923db3cf782,
  abstract     = {{<p>We demonstrate that the weak gravity conjecture (WGC) and the Festina-Lente conjecture (FLC) yield novel bounds on any hypothetical fifth force and millicharged particles (mCPs), as well as on the scale of inflation and on the effective Higgs quartic interaction. In particular, we find that combining the FLC with inflation leads to stronger bounds on mCPs than what the simple application of the FLC provides. Furthermore, we have explored the implications of naturalness on both the FLC and WGC, and have found that these conjectures place a lower limit on the charge of a Uð1Þ gauge group.</p>}},
  author       = {{Abu-Ajamieh, Fayez and Chattopadhyay, Pratik and Okada, Nobuchika and Pasechnik, Roman and Wang, Zhi Wei}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Novel bounds from the weak gravity and Festina-Lente conjectures}},
  url          = {{http://dx.doi.org/10.1103/fxm9-6dx9}},
  doi          = {{10.1103/fxm9-6dx9}},
  volume       = {{113}},
  year         = {{2026}},
}