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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2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
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2026 2representative citing papers
The paper claims the null-surface formulation yields the tree-level t/u-pole graviton amplitude 16πG s³/(tu) at third order, but leaves the central coefficient and UV tail asserted.
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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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Quantum graviton scattering with definite helicities in the null surface formulation, Part II: Third-order scattering and the exchange channels \author{C.~N.~Kozameh \and G.~O.~Depaola}
The paper claims the null-surface formulation yields the tree-level t/u-pole graviton amplitude 16πG s³/(tu) at third order, but leaves the central coefficient and UV tail asserted.