site stats

Cosmology of the invisible axion

http://theory.caltech.edu/~preskill/pubs/preskill-1983-axion.pdf WebSome of the consequences are the existence of invisible components of dark matter, new inflaton candidates, invisible monopoles and a number of invisible particles that might dominate during various eras, in particular between BBN and recombination and decay subsequently. ... which is an axion-like field in the 4D effective field theory. This ...

{Cosmology of the Invisible Axion} Frank Wilczek

WebMar 17, 2024 · The Nobel Prize-winning physicists Frank Wilczek and Steven Weinberg studied the field’s associated particle, which Wilczek named the axion after a brand of laundry detergent. Researchers later realized that invisible axion particles could have properties suitable for dark matter, the missing five-sixths of the cosmos. WebFeb 18, 2024 · The axions produced by vacuum realignment are a form of cold dark matter today. The axion provides a solution then not only to the strong CP problem but also to … halfords e hub learning https://boldnraw.com

Experimental Tests of the "Invisible" Axion - NASA/ADS

WebAug 31, 2024 · [9] Preskill John, Wise Mark B. and Wilczek Frank 1983 Cosmology of the Invisible Axion Phys. Lett. B ed M. A. Srednicki 120 127-132. Crossref; Google Scholar [10] Planck Collaboration, Ade P. A. R. et al. 2016 Planck 2015 results. XIII. Cosmological parameters Astron. Astrophys. 594 A13 (arXiv:1502.01589) Crossref; Preprint; Google … WebApr 8, 2024 · Download Citation Circularly polarized gravitational waves in Chern-Simons gravity originated from an axion domain wall We study a scattering problem of gravitational waves (GWs) by an axion ... WebWe identify a new cosmological problem for models which solve the strong CP puzzle with an invisible axion, unrelated to the domain wall problem. Because the axion is very … halfordselearning.co.uk

Inflation and axion cosmology Semantic Scholar

Category:Universe Free Full-Text Dark Energy, QCD Axion, and Trans …

Tags:Cosmology of the invisible axion

Cosmology of the invisible axion

The QCD axion and unification SpringerLink

WebThe cosmological properties of axions are reviewed. We discuss the axions produced by thermal processes in the early universe, the evolution of the average axion field between … WebJan 6, 1983 · A cosmological bound on the invisible axion. Author links open overlay panel L.F. Abbott 1, P. Sikivie 2. Show more. Add to Mendeley ... Abstract. The production of axions in the early universe is studied. Axion models which break the U(1) PQ symmetry above 10 12 GeV are found to produce an unacceptably large axion energy density. …

Cosmology of the invisible axion

Did you know?

WebIn Section 3, we discuss axion cosmology, specifically recent calculations of the cold and hot axion abundances, axions emitted from topological defects, and axion isocurvature … WebSemantic Scholar extracted view of "Inflation and axion cosmology" by Andrei Linde

WebJan 6, 1983 · Cosmology Cosmological bound on the invisible axion Authors: L.F. Abbott PA Sikivie Abstract The production of axions in the early universe is studied. Axion models which break the U (1)PQ... WebNov 15, 2024 · The QCD axion is one of the most appealing candidates for the dark matter in the Universe. In this article, we discuss the possibility to predict the axion mass in the context of a simple renormalizable grand unified theory where the Peccei-Quinn scale is determined by the unification scale.

WebFor the “invisible” axion models, it was pointed out that the domain wall number N DW different from 1 must have led to serious cosmological problems in the standard Big Bang cosmology [97,98]. In this regard, the standard DFSZ models with N DW = … WebInflation has revolutionized cosmology primarily because it has eliminated the dependence of cosmological modelling on initial conditions. Thus inflationary cosmology is able to …

WebOct 16, 2009 · The axion is the pseudo-Nambu–Goldstone boson which arises from the Peccei–Quinn solution to the strong CP problem. Additionally, cold axion populations …

WebJan 6, 1983 · The axion lifetime for decays into two photons is longer than the age of the universe for an invisible axion. However, for our coherent state of axions, stimulated … halfords elearning forgot passwordWebThis search excludes the axion-photon coupling predicted by one of the benchmark models of "invisible" axion dark matter, the KSVZ model. This sensitivity is achieved using a large-volume cavity ... bungalow alehouse sterlingWebMar 4, 2024 · The axions produced by vacuum realignment are a form of cold dark matter today. The axion provides a solution then not only to the Strong CP Problem but also to … halfords edmonton alberta