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imaginary time path integral 1ring polymer 1time-dependent density functional theory 1weak values 1wick rotation 1

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quant-ph2026

Wick rotation derivation for weak values of the density and time-dependent density functional theory

Russell B. Thompson, Zarin Tasneem, Yves Caudano

The paper derives the equations of time-dependent density functional theory (TDDFT) from a ring‑polymer self‑consistent field framework by using a Wick rotation that links imaginar…