论文标题
通过从字符串壁网络中搜索通过CMB双折射搜索类似轴突的粒子
Searching for axion-like particles through CMB birefringence from string-wall networks
论文作者
论文摘要
轴状颗粒（ALP）可以形成一个宇宙弦和域壁网络，该网络在重组后生存，并导致宇宙微波背景（CMB）的各向异性双折射。除了研究宇宙字符串外，我们还阐明并强调了ALP场域壁的形成如何影响宇宙双向信号。这些观察结果提供了一种独特的方法，可以探测Alps的质量$ 3H_0 \ sillsim m_a \ Lessim 3H _ {\ rm cmb} $。使用来自几个望远镜的CMB双折射的测量，我们找不到CMB的轴突缺失诱导的各向异性双折射的证据。我们提取包括包括Alp质量$ M_A $的模型参数的约束，Alp-Photon耦合$ \ Mathcal {A} \ Propto G_ {Aγγ} F_A $，域壁号$ n _ {\ rm DW} $，以及特征在defall of defallance和defall网络中的尺寸。考虑到最新的各向同性CMB双折射的证据，我们发现很难通过对信号是由ALP缺陷网络产生的信号的假设，而无需对各向异性双折射的未检测来适应这一点。
Axion-like particles (ALPs) can form a network of cosmic strings and domain walls that survives after recombination and leads to anisotropic birefringence of the cosmic microwave background (CMB). In addition to studying cosmic strings, we clarify and emphasize how the formation of ALP-field domain walls impacts the cosmic birefringence signal; these observations provide a unique way of probing ALPs with masses in the range $3H_0 \lesssim m_a \lesssim 3H_{\rm cmb}$. Using measurements of CMB birefringence from several telescopes, we find no evidence for axion-defect-induced anisotropic birefringence of the CMB. We extract constraints on the model parameters that include the ALP mass $m_a$, ALP-photon coupling $\mathcal{A} \propto g_{aγγ} f_a$, the domain wall number $N_{\rm dw}$, and parameters characterizing the abundance and size of defects in the string-wall network. Considering also recent evidence for isotropic CMB birefringence, we find it difficult to accommodate this with the non-detection of anisotropic birefringence under the assumption that the signal is generated by an ALP defect network.
