PIRSA:13010023 Scientific Series Cosmology

DOI10.48660/13010023

Series: Cosmology and Gravitation

Upadhye, A. (2013). Fifth forces and new particles from dark energy. Perimeter Institute. https://pirsa.org/13010023

Upadhye, Amol. Fifth forces and new particles from dark energy. Perimeter Institute, Jan. 08, 2013, https://pirsa.org/13010023 

@misc{ pirsa_PIRSA:13010023,
  doi = {10.48660/13010023},
  url = {https://pirsa.org/13010023},
  author = {Upadhye, Amol},
  keywords = {Cosmology},
  language = {en},
  title = {Fifth forces and new particles from dark energy},
  publisher = {Perimeter Institute},
  year = {2013},
  month = {jan},
  note = {PIRSA:13010023 see, \url{https://pirsa.org}}
}

Abstract

Dark energy coupled to Standard Model fermions and gauge bosons gives rise to fifth forces and new particles, which are readily accessible to experiments from laboratory to cosmological scales.  I will discuss chameleon and symmetron models, whose fifth forces are screened locally through large effective masses and symmetry-restoring phase transitions, respectively.  Fifth force experiments such as the Eot-Wash torsion balance will test chameleons with small quantum corrections and gravitation-strength fifth forces, as well as symmetrons with coupling energies just beyond the Standard Model scale.  A dark energy coupling to electromagnetism would imply that photons passing through a magnetic field will oscillate into particles of dark energy, a phenomenon studied by afterglow experiments such as CHASE.  After constraining dark energy using laboratory experiments, I proceed to astrophysical probes.  Particles of a photon-coupled dark energy could be produced in the Sun and detected in magnetic helioscopes such as CAST, while fifth forces may alter the dynamics of variable stars and the growth of large-scale structure.

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