{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/searching-for-domain-wall-network-by-parkes","title":"Domain Wall Network: A Dual Solution for Gravitational Waves and Hubble Tension?","arxiv_id":"2212.07871","date":"2022-12-15","proceeding":null,"authors":["Ligong Bian","Shuailiang Ge","Changhong Li","Jing Shu","Junchao Zong"],"abstract":"We explore the possibility that domain wall networks generate the stochastic gravitational wave background (SGWB) observed as a strong common power-law process in the Data Release-2 of Parkes Pulsar Timing Array. We find that a broad range of parameters, specifically wall tension around $\\sigma_{\\textrm{DW}} \\sim (29-414 , \\textrm{TeV})^3$ and wall-decay temperature within $T_d \\sim 20-257 , \\textrm{MeV}$, can explain this phenomenon at a $68\\%$ credible level. Meanwhile, the same parameters could ease the Hubble tension if particles from these domain wall networks decay into dark radiation. We establish a direct analytical relationship, $\\Omega_{\\textrm{GW}}(f_p,T_0) h^2 \\sim \\Omega_{\\textrm{rad}} h^2 ( \\Omega_\\nu \\Delta N_{\\textrm{eff}})^2$, to illustrate this coincidence, underlining its importance in the underlying physics and potential applicability to a wider range of models and data. Conversely, if the common power-law process is not attributed to domain wall networks, our findings impose tight limits on the wall tension and decay temperature.","url_abs":"https://arxiv.org/abs/2212.07871v3","url_pdf":"https://arxiv.org/pdf/2212.07871v3.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"searching-for-domain-wall-network-by-parkes","repo_url":"https://github.com/nanograv/enterprise_extensions","is_official":1,"mentioned_in_paper":0,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}