Work

Evolution of Axionic Strings and Spectrum of Axions Radiated from Them

Year: 1999

Type: article

Abstract: Cosmological evolution of axionic strings is investigated by numerically solving field equations of a complex scalar field in $3+1$ dimensions. It is shown that the global strings relax to the scaling solution with a significantly smaller number density than the case of local strings. The power spectrum of axions radiated from them is calculated from the simulation data, which is found to be highly peaked around the Hubble scale, and a more accurate constraint on the Peccei-Quinn breaking scale is obtained.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.82.4578

Authors: Masahide Yamaguchi, M. Kawasaki, Jun'ichi Yokoyama

Institutions: The University of Tokyo, Institute for Cosmic Ray Research, Kyoto University, Yukawa Institute for Theoretical Physics

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1969210284

FWCI: 2.812

Cites: 32

Cited by: 143

Related to: 10