Research Topic

Bosonic coherent motion for the Universe evolution research

  • Submission closed.

About this Research Topic

Cold dark matter(CDM) and dark energy(DE) constitute roughly 27% and 68%, respectively, of the energy density of the Universe. The baryons constitute only 4.5%--5.0%, but it is the most well established one among these through the nucleosynthesis theory in calculating the primordial abundances of light ...

Cold dark matter(CDM) and dark energy(DE) constitute roughly 27% and 68%, respectively, of the energy density of the Universe. The baryons constitute only 4.5%--5.0%, but it is the most well established one among these through the nucleosynthesis theory in calculating the primordial abundances of light elements, Helium-4, Deuterium, Helium-3, Lithium-7, Berilium-7, etc., with the input net baryon number fraction of (0.47-0.65)x10**{-9} times the critical energy density, which agrees with the observation. On the other hand, the natures on CDM and DE have not been confirmed yet. Therefore, probing what is the CDM particle(s) and how the present DE has emerged in the recent history of the Universe will be of the prime activity in the early cosmology research, both in model building and in detection method. With the discovery of the Higgs-Brout-Englert-Guralnik-Hagen-Kibble(HBEGHK) boson, which is the first experimental discovery on the fundamental scalar particles, the fundamental scalars will be extensively used in the CDM research.

In the research topic on the ``bosonic coherent motion(BCM) in the Universe evolution", CDM from the harmonic oscillation of coherent bosons, collectively moving together with the same phase, and the related issues will be scrutinized both theoretically and experimentally. The most well-known BCM for CDM in the Universe evolution is the coherent axion-oscillation. For the coherent axion CDM, its mass and interaction strengths are more or less related and hence a definite mass can be given, leading to the axion lifetime greater than the age of the Universe for m_a<24 eV. Other fundamental scalars with appropriate potentials may work also as CDM candidates. Under the name of 'quintessence', fundamental scalars have been already suggested for the DE domination in the recent history of the Universe. However, there has not emerged a single most attractive quintessence model yet, and the research on DE with fundamental scalars will get momentum with the HBEGHK boson discovery.

The on-going experiments looking for BCM as a CDM candidate are mostly the Sikivie-type cavity detectors. Because of its limited range of operation, for example only the mico-eV range in case of axions, other feasible experimental ideas are welcome in detecting the BCM. For detecting DE, fresh new ideas beyond the by-gone history of the cosmological evolution may be needed.


Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

Recent Articles

Loading..

About Frontiers Research Topics

With their unique mixes of varied contributions from Original Research to Review Articles, Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author.

Topic Editors

Loading..

Submission Deadlines

Submission closed.

Participating Journals

Loading..

Topic Editors

Loading..

Submission Deadlines

Submission closed.

Participating Journals

Loading..
Loading..

total views article views article downloads topic views

}
 
Top countries
Top referring sites
Loading..

Comments

Loading..

Add a comment

Add comment
Back to top