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    Computation of contour integrals on ℳ0,n 

    Cachazo, Freddy; Gomez, Humberto (Springer Verlag, 2016-04-01)
    Contour integrals of rational functions over (Formula presented.) , the moduli space of n-punctured spheres, have recently appeared at the core of the tree-level S-matrix of massless particles in arbitrary dimensions. The ...
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    Λ scattering equations 

    Gomez, Humberto (Springer Verlag, 2016-06-01)
    Abstract: The CHY representation of scattering amplitudes is based on integrals over the moduli space of a punctured sphere. We replace the punctured sphere by a double-cover version. The resulting scattering equations ...
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    CHY loop integrands from holomorphic forms 

    Gomez, Humberto; Mizer, Sebastian; Zhang, Guojun (Springer Verlag, 2017-03-01)
    Recently, the Cachazo-He-Yuan (CHY) approach for calculating scattering amplitudes has been extended beyond tree level. In this paper, we introduce a way of constructing CHY integrands for Φ3 theory up to two loops from ...
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    One-loop Parke-Taylor factors for quadratic propagators from massless scattering equations 

    Gomez, Humberto; Lopez-Arcos, Cristhiam; Talavera, Pedro (Springer Verlag, 2017-10-01)
    In this paper we reconsider the Cachazo-He-Yuan construction (CHY) of the so called scattering amplitudes at one-loop, in order to obtain quadratic propagators. In theories with colour ordering the key ingredient is the ...
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    Non-planar one-loop Parke-Taylor factors in the CHY approach for quadratic propagators 

    Ahmadiniaz, Naser; Gomez, Humberto; Lopez-Arcos, Cristhiam (Springer Verlag, 2018-05-01)
    In this work we have studied the Kleiss-Kuijf relations for the recently introduced Parke-Taylor factors at one-loop in the CHY approach, that reproduce quadratic Feynman propagators. By doing this, we were able to identify ...

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    AutorGomez, Humberto (5)Lopez-Arcos, Cristhiam (2)Ahmadiniaz, Naser (1)Cachazo, Freddy (1)Mizer, Sebastian (1)Talavera, Pedro (1)Zhang, Guojun (1)MateriaDifferential and Algebraic Geometry (5)Scattering Amplitudes (5)
    Superstrings and Heterotic Strings (5)
    Field Theories in Higher Dimensions (1)... másFecha2016 (2)2017 (2)2018 (1)Has File(s)Yes (5)

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