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

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