Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Softening the UV without new particles
 
review article

Softening the UV without new particles

Hook, Anson
•
Rattazzi, Riccardo  
December 13, 2023
Physical Review D

We explore an odd class of quantum field theories where a hierarchy problem is resolved with new dynamics as opposed to new particles. The essential element of our construction is a U(1) pseudo-NambuGoldstone boson with symmetry breaking interactions all characterized by a large number N of units of the fundamental charge. In the resulting effective theory, quantum corrections, like those to the effective potential and mass, which are normally power divergent and saturated at the UV cutoff, are instead saturated at a much lower scale. This critical scale, which does not involve any new particle, corresponds to the onset of unsuppressed multiparticle production in scattering processes. Remarkably, this all happens within the tractable domain of weak coupling. Terms involving arbitrarily high powers of the Goldstone field must, however, be taken into account. In particular, a truncation to the renormalizable part of the effective Lagrangian would completely miss the physics.

  • Details
  • Metrics
Type
review article
DOI
10.1103/PhysRevD.108.115019
Web of Science ID

WOS:001155803700001

Author(s)
Hook, Anson
Rattazzi, Riccardo  
Date Issued

2023-12-13

Publisher

American Physical Society

Published in
Physical Review D
Volume

108

Issue

11

Article Number

115019

Subjects

Physical Sciences

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPTP  
FunderGrant Number

NSF

PHY-2210361

Maryland Center for Fundamental Physics (MCFP)

Swiss National Science Foundation

200020-213104

Show more
Available on Infoscience
February 23, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/205470
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés