https://arxiv.org/abs/2106.12582 https://indico.in2p3.fr/event/25013/contributions/101345/
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https://arxiv.org/abs/2106.12582 https://indico.in2p3.fr/event/25013/contributions/101345/ |
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L'organisation du Système Solaire et la description des mouvements qui le caractérisent ont constitué le cœur de l'astronomie pendant de siècles depuis l'antiquité. Cette science appelée Mécanique Céleste qui repose sur la théorie de la gravitation a connu son heure de gloire au XIXe siècle, avant de passer au second plan devant l'essor de l'astrophysique. […] |
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Abstract: We review recent advances in the calculation of the two-loop Feynman integrals which contribute to five-particle scattering amplitudes with one massive leg. These amplitudes are required to provide theoretical predictions for the three-particle production (two massless and one massive particle) at the next-to-next-to leading-order approximation. We will compare several analytic approaches to the problem […] |
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As the LHC accumulates data, the need grows for more efficient methods to compute scattering amplitudes. One such method manages to swap the difficult problem of integrating thousands of Feynman diagrams for a much simpler one: solving a system of linear equations. This can be done when there is a known "alphabet" of appropriate singularities […] |
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