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Building upon several recent advances in the development ofeffective-one-body models for spin-aligned eccentric binaries with individualmasses $(m_1,m_2)$ we introduce a new EOB waveform model that aims atdescribing inspiralling binaries in the large mass-ratio regime, $m_1\gg m_2$.The model exploits the current state-of-the-art TEOBResumS-Dali model foreccentric binaries, but the standard EOB potentials $(A,\bar{D},Q)$, informedby Numerical Relativity (NR) simulations, are replaced with the correspondingfunctions that are linear in the symmetric mass ratio $\nu\equiv m_1m_2/(m_1+m_2)^2$ taken at 8.5PN accuracy. To improve their strong-fieldbehavior, these functions are: (i) suitably factorized and resummed usingPad\'e approximants and (ii) additionally effectively informed tostate-of-the-art numerical results obtained by gravitational self-force theory(GSF). For simplicity, the spin-sector of the model is taken to be the one ofTEOBResumS-Dali, though removing the NR-informed spin-orbit effectivecorrections. We propose the current GSF-informed EOB framework as aconceptually complete analytical tool to generate waveforms for eccentricExtreme (and Intermediate) Mass Ratio Inspirals for future gravitational wavedetectors.

Towards a gravitational self force-informed effective-one-body waveform model for nonprecessing, eccentric, large-mass-ratio inspirals