2026-06-18 (4D QFT: the [formula in source] LSZ bridge [formula in source] one-loop unitarity, v278)
Research changelog · TFPT — Introduction and reading guide
v278_lsz_bridge_unitarity.py ( QFT4D.SPERT.04) connects the perturbative S-matrix to the physical asymptotic one and verifies one-loop unitarity. \ LSZ bridge: the EG [formula in source] -products of [formula in source] ( v269) are the OS Wick-rotated correlators ( v240), so amputate [formula in source] on-shell-residue gives [formula in source] ; \ the gap [formula in source] gives Haag–Ruelle asymptotic states. \ o
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