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Article overview
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Gravitational Waves from Preheating in Inflation with Weyl Symmetry | | Wei-Yu Hu
; Qing-Yang Wang
; Yan-Qing Ma
; Yong Tang
; | | Date: |
1 Nov 2023 | | Abstract: | Inflation with Weyl scaling symmetry provides a viable scenario that can
generate both the nearly scaling invariant primordial density fluctuation and a
dark matter candidate. Here we point out that, in additional to the primordial
gravitational waves (GWs) from quantum fluctuations, the production of
high-frequency GWs from preheating in such inflation models can provide an
another probe of the inflationary dynamics. We conduct both linear analytical
analysis and nonlinear numerical lattice simulation in a typical model. We find
that significant stochastic GWs can be produced and the frequency band is
located around $10^8$ Hz $sim$ $10^9$ Hz, which might be probed by future
resonance-cavity experiments. | | Source: | arXiv, 2311.00239 | | Services: | Forum | Review | PDF | Favorites | |
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