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arXiv · 2306.17022

Footprints of Axion-Like Particle in Pulsar Timing Array Data and James Webb Space Telescope Observations

Shu-Yuan Guo·Maxim Khlopov·Xuewen Liu·Lei Wu·Yongcheng Wu·Bin Zhu
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Abstract

Several Pulsar Timing Array (PTA) collaborations have recently reported the evidence for a stochastic gravitational-wave background (SGWB), which can unveil the formation of primordial seeds of inhomogeneities in the early universe. With the SGWB parameters inferred from PTAs data, we can make a prediction of the seeds for early galaxy formation from the domain walls in the axion-like particles (ALPs) field distribution. This also naturally provides a solution to the observation of high redshifts by the James Webb Space Telescope. The predicted photon coupling of the ALP is within the reach of future experimental searches.

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Shu-Yuan Guo, Maxim Khlopov, Xuewen Liu, Lei Wu, Yongcheng Wu, Bin Zhu. 2023-06-29. Footprints of Axion-Like Particle in Pulsar Timing Array Data and James Webb Space Telescope Observations. https://arxiv.org/abs/2306.17022

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