One-loop amplitudes for N$$ \mathcal{N} $$ = 2 homogeneous supergravities
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2019)153
Abstract: A bstractWe compute one-loop matter amplitudes in homogeneous Maxwell-Einstein supergravities with N$$ \mathcal{N} $$ = 2 supersymmetry using the double-copy construction. We start from amplitudes of N$$ \mathcal{N} $$ = 2 super-Yang-Mills theory with matter… read more here.
Keywords: mathcal homogeneous; loop; amplitudes mathcal; one loop ... See more keywords
All-multiplicity one-loop amplitudes in Born-Infeld electrodynamics from generalized unitarity
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DOI: 10.1007/jhep03(2020)009
Abstract: We initiate a study of non-supersymmetric Born-Infeld electrodynamics in 4d at the quantum level. Explicit all-multiplicity expressions are calculated for the purely rational one-loop amplitudes in the self-dual (+ + … +) and next-to-self-dual (… read more here.
Keywords: electrodynamics; infeld electrodynamics; one loop; loop amplitudes ... See more keywords
A minimal approach to the scattering of physical massless bosons
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DOI: 10.1007/jhep05(2018)063
Abstract: A bstractTree and loop level scattering amplitudes which involve physical massless bosons are derived directly from physical constraints such as locality, symmetry and unitarity, bypassing path integral constructions. Amplitudes can be projected onto a minimal… read more here.
Keywords: minimal approach; loop amplitudes; physical massless; approach ... See more keywords
Dispersive construction of two-loop P→πππ(P=K,η) amplitudes
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DOI: 10.1103/physrevd.101.074043
Abstract: We present and develop a general dispersive framework allowing to construct representations of the amplitudes for the processes $P\pi\to\pi\pi$, $P=K,\eta$, valid at the two-loop level in the low-energy expansion. The construction proceeds through a two-step… read more here.
Keywords: loop amplitudes; dispersive construction; two loop; construction two ... See more keywords
Direct numerical approach to one-loop amplitudes
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DOI: 10.1103/physrevd.95.016002
Abstract: We present a completely numerical method of calculating one-loop amplitudes. Our approach is built upon two different existing methods: the contour deformation and the extrapolation methods. Taking the best features of each of them, we… read more here.
Keywords: numerical approach; one loop; loop amplitudes; direct numerical ... See more keywords
Two-loop amplitudes for $q g \to H q$ and $q \bar{q} \to H g$ mediated by a nearly massless quark
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DOI: 10.1103/physrevd.95.054012
Abstract: We compute the two-loop QCD corrections to $q g \to H q$ and $q \bar{q} \to H g$ amplitudes mediated by loops of nearly massless quarks. These amplitudes provide the last missing ingredient required to… read more here.
Keywords: two loop; loop amplitudes; amplitudes bar; nearly massless ... See more keywords
Open Loop Amplitudes and Causality to All Orders and Powers from the Loop-Tree Duality.
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DOI: 10.1103/physrevlett.124.211602
Abstract: Multiloop scattering amplitudes describing the quantum fluctuations at high-energy scattering processes are the main bottleneck in perturbative quantum field theory. The loop-tree duality is a novel method aimed at overcoming this bottleneck by opening the… read more here.
Keywords: loop tree; open loop; loop amplitudes; tree duality ... See more keywords