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astro-ph.CO2023★ 2 cited
Explaining Pulsar Timing Array Observations with Primordial Gravitational Waves in Parity-Violating Gravity
Chengjie Fu, Jing Liu, Xing-Yu Yang +2
The pulsar timing array (PTA) collaborations have recently suggested the presence of a gravitational wave background at nano-Hertz frequencies. In this paper, we explore potential…
gr-qc2023
Particle production during Inflation with a non-minimally coupled spectator scalar field
Zhe Yu, Chengjie Fu, Zong-Kuan Guo
We study the inflationary model with a spectator scalar field coupled to both the inflaton and Ricci scalar. The interaction between the field and the gravity, denoted by $…