Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Andrzej Pokraka"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-32 (2024)
Abstract Arkani-Hamed and collaborators have recently shown that scattering amplitudes for colored theories can be expressed as integrals over combinatorial objects simply constructed from surfaces decorated by kinematic data. In this paper we extend
Externí odkaz:
https://doaj.org/article/7fb796c783fb41e59db1bd44b4f60cc5
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-71 (2024)
Abstract We study the twisted (co)homology of a family of genus-one integrals — the so called Riemann-Wirtinger integrals. These integrals are closely related to one-loop string amplitudes in chiral splitting where one leaves the loop-momentum, mod
Externí odkaz:
https://doaj.org/article/14c6ac4b675f4b6cb14e3f1f9349eca2
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-55 (2024)
Abstract We consider the 5-mass kite family of self-energy Feynman integrals and present a systematic approach for constructing an ε-form basis, along with its differential equation pulled back onto the moduli space of two tori. Each torus is associ
Externí odkaz:
https://doaj.org/article/ae55518956d84b83939ea045c9f4be8e
Autor:
Shounak De, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-42 (2024)
Abstract The cosmological polytope and bootstrap programs have revealed interesting connections between positive geometries, modern on-shell methods and bootstrap principles studied in the amplitudes community with the wavefunction of the Universe in
Externí odkaz:
https://doaj.org/article/0c658742283e41d398f2571192929bca
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-44 (2024)
Abstract We compute the stress-tensor two-point function in three-dimensional Yang-Mills theory to three-loops in perturbation theory. Using its calculable shape at high momenta, we test the notion that its Borel transform is saturated at low energie
Externí odkaz:
https://doaj.org/article/a20ea3cfc6724ea7887a446811c6e319
Autor:
Mathieu Giroux, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-78 (2023)
Abstract We present a loop-by-loop method for computing the differential equations of Feynman integrals using the recently developed dual form formalism. We give explicit prescriptions for the loop-by-loop fibration of multi-loop dual forms. Then, we
Externí odkaz:
https://doaj.org/article/f604bd5c20ea4ca3b988aed7078990c1
Autor:
Simon Caron-Huot, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-64 (2022)
Abstract The first paper of this series introduced objects (elements of twisted relative cohomology) that are Poincaré dual to Feynman integrals. We show how to use the pairing between these spaces — an algebraic invariant called the intersection
Externí odkaz:
https://doaj.org/article/423a611cae394ac6b6879feed7ad6e7c
Autor:
Simon Caron-Huot, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-57 (2021)
Abstract We elucidate the vector space (twisted relative cohomology) that is Poincaré dual to the vector space of Feynman integrals (twisted cohomology) in general spacetime dimension. The pairing between these spaces — an algebraic invariant call
Externí odkaz:
https://doaj.org/article/e52c7bda62fb4987813c1db038024259
Autor:
Riccardo Gonzo, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-48 (2021)
Abstract Light-ray operators naturally arise from integrating Einstein equations at null infinity along the light-cone time. We associate light-ray operators to physical detectors on the celestial sphere and we provide explicit expressions in perturb
Externí odkaz:
https://doaj.org/article/0fc1ad86d42a4fc393c1d2429eb6e1de
Autor:
Sebastian Mizera, Andrzej Pokraka
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-39 (2020)
Abstract We study a surprising phenomenon in which Feynman integrals in D = 4 − 2ε space-time dimensions as ε → 0 can be fully characterized by their behavior in the opposite limit, ε → ∞. More concretely, we consider vector bundles of Fey
Externí odkaz:
https://doaj.org/article/faf57d59bc0940cf9b4345cbb4b7f5c4