Unitarity of the Box Diagram

R. E. Cutkosky, “Singularities and discontinuities of Feynman amplitudes,” J. Math. Phys. 1

1960

Earlier work this paper cites.

S. Mandelstam, “Unitarity Condition Below Physical Thresholds in the Normal and Anomalous Cases,” Phys. Rev. Lett. 4

1960

Earlier work this paper cites.

R. E. Cutkosky, “Anomalous Thresholds”, Rev. Mod. Phys. 33

1961

Earlier work this paper cites.

M. Fowler, “Introduction to Momentum Space Integration Techniques in Perturbation Theory”, Journal of Mathematical Physics 3, 936 (1962); doi: 10.1063/1.1724310

1962

Cited alongside, same era.

M. J. G. Veltman, “Unitarity and causality in a renormalizable field theory with unstable particles,” Physica 29

1963

Cited alongside, same era.

G. ’t Hooft and M. J. G. Veltman, “Diagrammar,” NATO Sci. Ser. B 4

1974

Cited alongside, same era.

R. Zwicky, “A brief Introduction to Dispersion Relations and Analyticity,” arXiv:1610.06090 [hep-ph]

Original

Cited in the paper.

P. Chin and E. T. Tomboulis, “Nonlocal vertices and analyticity: Landau equations and general Cutkosky rule,” arXiv:1803.08899 [hep-th]

Original

Cited in the paper.

R. Pius and A. Sen, “Cutkosky Rules for Superstring Field Theory,” arXiv:1604.01783v3 [hep-th]]

Original

Cited in the paper.

F. Briscese and L. Modesto, “Cutkosky rules and perturbative unitarity in Euclidean nonlocal quantum field theories,” arXiv:1803.08827 [gr-qc]

Original

Cited in the paper.

D. Anselmi, “Algebraic cutting equations,” arXiv:1612.07148 [hep-th]

Original

Cited in the paper.

G. F. Sterman, “An Introduction to quantum field theory,” Cambridge University Press (1993)

1993

Later among the works it cites.

E. T. Tomboulis, “Causality and Unitarity via the Tree-Loop Duality Relation,” JHEP 1705

Original

2017

Later among the works it cites.