论文标题
域墙网络：重力波和哈勃张力的双重解决方案？
Domain Wall Network: A Dual Solution for Gravitational Waves and Hubble Tension?
论文作者
论文摘要
我们探讨了域壁网络生成随机引力波背景（SGWB）的可能性，在Parkes Pulsar正时阵列的数据释放2中被认为是强大的公共幂律过程。 We find that a broad range of parameters, specifically wall tension around $σ_{\textrm{DW}} \sim (29-414 , \textrm{TeV})^3$ and wall-decay temperature within $T_d \sim 20-257 , \textrm{MeV}$, can explain this phenomenon at a $68\%$ credible level.同时，如果来自这些域壁网络中的粒子腐烂到深色辐射，则相同的参数可以缓解哈勃张力。我们建立了直接的分析关系，$ω_ {\ textrm {gw}}（f_p，t_0）h^2 \ simω_ {\ textrm {\ textrm {rad}} h^2（ω______________________________________________________________________tΔn_{\ textrm {fextrm {eff}} 2 $，以弥补本质，并在本质上进行了实用。更广泛的模型和数据。相反，如果不归因于域墙网络，我们的发现对墙壁张力和衰减温度施加了严格的限制。
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 $σ_{\textrm{DW}} \sim (29-414 , \textrm{TeV})^3$ 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, $Ω_{\textrm{GW}}(f_p,T_0) h^2 \sim Ω_{\textrm{rad}} h^2 ( Ω_νΔN_{\textrm{eff}})^2$, 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.
