TY  - JOUR
AU  - Ghoshal, Anish
AU  - Hamada, Yu
TI  - Gravitational waves created by current-carrying domain walls
JO  - Physical review / D
VL  - 112
IS  - 11
SN  - 2470-0010
CY  - Ridge, NY
PB  - American Physical Society
M1  - PUBDB-2025-05796
M1  - arXiv:2501.01542
M1  - DESY-24-198
SP  - 115019
PY  - 2025
N1  - Phys.Rev.D 112 (2025) 11, 115019. 16 pages, 8 figures; v2: added several sections and revised some calculations and plots, version matches the one published in PRD; v3: corrected some typos
AB  - Domain wall (DW) networks may have formed in the early Universe following the spontaneous breaking of a discrete symmetry. Notably, several particle physics models predict the existence of current-carrying DWs, which can capture and store particles as zero modes on it. In this study, we demonstrate that gravitational waves (GWs) generated by current-carrying DWs with fermionic zeromodes exhibit a novel feature: an additional peak with a distinct spectral shape in the GW spectrum resembling mountains, arising from metastable topological remnants, which we term “spherons.” This distinct signature could be detectable in upcoming GW observatories such as LISA. The results suggest that DW networks in beyond Standard Model scenarios could emit GW signals that are significantly stronger and with greater detectability than previously expected.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1103/24w5-rflt
UR  - https://bib-pubdb1.desy.de/record/643047
ER  -