Cosmological bounds on pseudo Nambu-Goldstone bosons

Details Cosmological bounds on pseudo Nambu-Goldstone bosons Cosmological bounds on pseudo Nambu-Goldstone bosons

2011-10-13

arxiv.org/abs/1110.2895v2

JCAP02(2012)032

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, 13 pictures. Enlarged discussions on BBN and recombination constraints. One figure and several references added. Ver

Scientific paper

10.1088/1475-7516/2012/02/032

We review the cosmological implications of a relic population of pseudo Nambu-Goldstone bosons (pNGB) with an anomalous coupling to two photons, often called axion-like particles (ALPs). We establish constraints on the pNGB mass and two-photon coupling by considering big bang nucleosynthesis, the physics of the cosmic microwave background, and the diffuse photon background. The bounds from WMAP7 and other large-scale-structure data on the effective number of neutrino species can be stronger than the traditional bounds from the primordial helium abundance. These bounds, together with those from primordial deuterium abundance, constitute the most stringent probes of early decays.

Affiliated with

Also associated with

No associations

Rating

Cosmological bounds on pseudo Nambu-Goldstone bosons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmological bounds on pseudo Nambu-Goldstone bosons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological bounds on pseudo Nambu-Goldstone bosons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-500104