Fluctuating boundary data in Hamilton's principle propagate via Hamilton-Jacobi to produce state-dependent multiplicative Langevin forces, with additive noise recovered only after Markovian coarse-graining.
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4 Pith papers cite this work. Polarity classification is still indexing.
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2026 4verdicts
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The quantum Fisher information is reformulated as the connected symmetrized covariance of a time-integrated action deformation or as an insertion of the action derivative in the propagator within a path integral framework.
Decoherence leaves complementary quantum (cat-like state with Wigner negativity) and classical (Darwinian which-path) records in the bath, demonstrated via tensor-network simulations of a spin-boson model.
Path-integral quantization of the EM field in dispersive, absorbing nonlinear dielectrics produces a Kerr-type response function and Feynman rules after integrating out matter and bath degrees of freedom.
citing papers explorer
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Path Integral Approach to Quantum Fisher Information
The quantum Fisher information is reformulated as the connected symmetrized covariance of a time-integrated action deformation or as an insertion of the action derivative in the propagator within a path integral framework.
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Complementary quantum and classical records of qubit decoherence
Decoherence leaves complementary quantum (cat-like state with Wigner negativity) and classical (Darwinian which-path) records in the bath, demonstrated via tensor-network simulations of a spin-boson model.
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Path integral quantization of the electromagnetic field in nonlinear dielectric materials
Path-integral quantization of the EM field in dispersive, absorbing nonlinear dielectrics produces a Kerr-type response function and Feynman rules after integrating out matter and bath degrees of freedom.