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We produce gravitational waveforms for nonspinning compact binariesundergoing a quasicircular inspiral. Our approach is based on a two-timescaleexpansion of the Einstein equations in second-order self-force theory, whichallows first-principles waveform production in tens of milliseconds. Althoughthe approach is designed for extreme mass ratios, our waveforms agreeremarkably well with those from full numerical relativity, even forcomparable-mass systems. Our results will be invaluable in accurately modellingextreme-mass-ratio inspirals for the LISA mission and intermediate-mass-ratiosystems currently being observed by the LIGO-Virgo-KAGRA Collaboration.

Gravitational waveforms for compact binaries from second-order self-force theory