The warm α-attractor E-model is claimed to be compatible with Planck 2018 in both weak and strong dissipative regimes, but the strong-regime derivation contains a missing ε² factor that invalidates the predicted tensor-to-scalar ratio.
The inflationary universe
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The $\alpha$-Attractor E-Model in Warm Inflation: Observational Viability from Planck 2018
The warm α-attractor E-model is claimed to be compatible with Planck 2018 in both weak and strong dissipative regimes, but the strong-regime derivation contains a missing ε² factor that invalidates the predicted tensor-to-scalar ratio.