Highly eccentric extreme-mass-ratio-inspiral waveforms via fast self-forced inspirals

We present new developments and comparisons of competing inspiral waveform models for highly eccentric nonspinning extreme intermediate mass-ratio inspirals (EMRIs IMRIs). Starting from our high eccentricity self-force library, we apply the near-identity transform (NIT) technique to rapidly compute self-forced first time. Upon evaluating approximate NIT results via comparison with full inspirals, couple accurate streamlined data potential generation schemes. find that, although strains method, are consistent EMRIs. However, implementation at postadiabatic order) is not able achieve Laser Interferometer Space Antenna-motivated accuracy goals IMRIs. Our most sophisticated waveforms devised through a that efficiently connects orbital parameters Teukolsky amplitudes phases. compare these those synthesized (summing over harmonics) based on kludge. assuming identical worldlines (so dephasing negligible), kludge favorably bodies.