André Jean Martin (20 September 1929 in Paris – 11 November 2020 in Geneva[1][2]) was a French particle physicist who worked at CNRS and CERN.
[citation needed] The most interesting results of Maurice Lévy's thesis are the reconstruction of a separable interaction from a phase shift[5] and an original demonstration of Levinson's theorem.
[8] After the proof, due to Froissart, that the total effective cross section cannot grow faster than the logarithm squared of the energy, using the Mandelstam representation,[9] he becomes interested in the amplitude of high-energy scattering.
[10] Finally, in 1966, he succeeded in demonstrating the validity of the Froissart bound using local field theory, without postulating the Mandelstam representation.
[22][23] André Martin has also studied low-energy scattering in the case of two dimensions of space[24] as well as the counting of related states.