SCOAP3 Repository 20 records found  1 - 10nextSearch took 0.02 seconds. 
1. Maximally supersymmetric amplitudes at infinite loop momentum / Bourjaily, Jacob L. ; Herrmann, Enrico ; Trnka, Jaroslav
We investigate the asymptotically large loop-momentum behavior of multiloop amplitudes in maximally supersymmetric (N=4, 8) quantum field theories in four dimensions. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.066006 arXiv:1812.11185
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2. UV cancellations in gravity loop integrands / Herrmann, Enrico ; Trnka, Jaroslav
In this work we explore the properties of four-dimensional gravity integrands at large loop momenta. [...]
Published in JHEP 1902 (2019) 084 10.1007/JHEP02(2019)084 arXiv:1808.10446
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3. Deep Into the Amplituhedron: Amplitude Singularities at All Loops and Legs / Arkani-Hamed, Nima ; Langer, Cameron ; Srikant, Akshay Yelleshpur ; Trnka, Jaroslav
In this Letter we compute a canonical set of cuts of the integrand for maximally helicity violating amplitudes in planar N=4 supersymmetric Yang-Mills theory, where all internal propagators are put on shell. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.051601 arXiv:1810.08208
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4. Vector Effective Field Theories from Soft Limits / Cheung, Clifford ; Kampf, Karol ; Novotny, Jiri ; Shen, Chia-Hsien ; et al
We present a bottom-up construction of vector effective field theories using the infrared structure of scattering amplitudes. [...]
Published in Physical Review Letters 120 (2018) 10.1103/PhysRevLett.120.261602 arXiv:1801.01496
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5. Locality and Unitarity of Scattering Amplitudes from Singularities and Gauge Invariance / Arkani-Hamed, Nima ; Rodina, Laurentiu ; Trnka, Jaroslav
We conjecture that the leading two-derivative tree-level amplitudes for gluons and gravitons can be derived from gauge invariance together with mild assumptions on their singularity structure. [...]
Published in Physical Review Letters 120 (2018) 10.1103/PhysRevLett.120.231602 arXiv:1612.02797
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6. Unwinding the amplituhedron in binary / Arkani-Hamed, Nima ; Thomas, Hugh ; Trnka, Jaroslav
We present new, fundamentally combinatorial and topological characterizations of the amplituhedron. [...]
Published in JHEP 1801 (2018) 016 10.1007/JHEP01(2018)016 arXiv:1704.05069
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7. Prescriptive unitarity / Bourjaily, Jacob ; Herrmann, Enrico ; Trnka, Jaroslav
We introduce a prescriptive approach to generalized unitarity, resulting in a strictly-diagonal basis of loop integrands with coefficients given by specifically-tailored residues in field theory. [...]
Published in JHEP 1706 (2017) 059 10.1007/JHEP06(2017)059 arXiv:1704.05460
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8. Multi-loop positivity of the planar N $$ \mathcal{N} $$ = 4 SYM six-point amplitude / Dixon, Lance ; Hippel, Matt ; McLeod, Andrew ; Trnka, Jaroslav
We study the six-point NMHV ratio function in planar N $$ \mathcal{N} $$ = 4 SYM theory in the context of positive geometry. [...]
Published in JHEP 1702 (2017) 112 10.1007/JHEP02(2017)112 arXiv:1611.08325
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9. A periodic table of effective field theories / Cheung, Clifford ; Kampf, Karol ; Novotny, Jiri ; Shen, Chia-Hsien ; et al
We systematically explore the space of scalar effective field theories (EFTs) consistent with a Lorentz invariant and local S-matrix. [...]
Published in JHEP 1702 (2017) 020 10.1007/JHEP02(2017)020 arXiv:1611.03137
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10. Gravity on-shell diagrams / Herrmann, Enrico ; Trnka, Jaroslav
We study on-shell diagrams for gravity theories with any number of super-symmetries and find a compact Grassmannian formula in terms of edge variables of the graphs. [...]
Published in JHEP 1611 (2016) 136 10.1007/JHEP11(2016)136 arXiv:1604.03479
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