Gravitational Waves from Preheating with Modified Gravitational-wave Propagation. (arXiv:2102.03084v2 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Wang_K/0/1/0/all/0/1">Ke Wang</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Huang_Q/0/1/0/all/0/1">Qing-Guo Huang</a>
We investigate how the production of gravitational waves (GWs) is affected by
the GW velocity $(c_T)$ during preheating after inflation. For instance, we
simulate the production of GWs after $lambdaphi^4$ chaotic inflation, and
find that GW spectrum is enhanced for $c_T<1$, but distorted (suppressed at low
frequency, but enhanced at high frequency) for $c_T>1$.
We investigate how the production of gravitational waves (GWs) is affected by
the GW velocity $(c_T)$ during preheating after inflation. For instance, we
simulate the production of GWs after $lambdaphi^4$ chaotic inflation, and
find that GW spectrum is enhanced for $c_T<1$, but distorted (suppressed at low
frequency, but enhanced at high frequency) for $c_T>1$.
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