In a 2D CGHS black hole with a linear Horndeski G3 coupling, the derived first-order correction lowers the Hawking temperature as mass decreases, and an assumed resummation leads to a cold remnant with logarithmically growing radiation entropy.
We record them here for generalG3(Φ,X Φ) and G5(Φ), using the shorthandφ±≡∂±φ, φ±±≡∂ 2 ±φ, φ+− ≡∂ +∂−φ, and likewise for ω; G3,Φ ≡∂G 3/∂Φ, G3,X≡∂G 3/∂XΦ, G′ 5≡dG 5/dΦ
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Anomaly quenching and dynamical cooling of Hawking evaporation in Horndeski gravity
In a 2D CGHS black hole with a linear Horndeski G3 coupling, the derived first-order correction lowers the Hawking temperature as mass decreases, and an assumed resummation leads to a cold remnant with logarithmically growing radiation entropy.