Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Hannesdottir, Holmfridur S."'
Autor:
Lee, Mang Hei Gordon, Pajer, Enrico, Giroux, Mathieu, Hannesdottir, Holmfridur S., Mizera, Sebastian, Pasiecznik, Celina
By directly probing the initial conditions of our universe, cosmological surveys offer us a unique observational handle on quantum field theory in curved spacetime with dynamical gravity and might even allow us to glean information about a full theor
Externí odkaz:
http://arxiv.org/abs/2410.00227
Autor:
Benincasa, Paolo, Giroux, Mathieu, Hannesdottir, Holmfridur S., Mizera, Sebastian, Pasiecznik, Celina, Vazão, Francisco
Observables in expanding universes are crucial to understand the physics of the early universe. In these lectures, we review some recent progress in understanding their mathematical structure and extract the physics encoded in them. After discussing
Externí odkaz:
http://arxiv.org/abs/2409.14947
We introduce an efficient method for deriving hierarchical constraints on the discontinuities of individual Feynman integrals. This method can be applied at any loop order and particle multiplicity, and to any configuration of massive or massless vir
Externí odkaz:
http://arxiv.org/abs/2406.05943
We review different notions of cuts appearing throughout the literature on scattering amplitudes. Despite similar names, such as unitarity cuts or generalized cuts, they often represent distinct computations and distinct physics. We consolidate this
Externí odkaz:
http://arxiv.org/abs/2402.19415
We find that different asymptotic measurements in quantum field theory can be related to one another through new versions of crossing symmetry. Assuming analyticity, we conjecture generalized crossing relations for multi-particle processes and the co
Externí odkaz:
http://arxiv.org/abs/2310.12199
We consider asymptotic observables in quantum field theories in which the S-matrix makes sense. We argue that in addition to scattering amplitudes, a whole compendium of inclusive observables exists where the time-ordering is relaxed. These include e
Externí odkaz:
http://arxiv.org/abs/2308.02125
We present several classes of constraints on the discontinuities of Feynman integrals that go beyond the Steinmann relations. These constraints follow from a geometric formulation of the Landau equations that was advocated by Pham, in which the singu
Externí odkaz:
http://arxiv.org/abs/2211.07633
We compute the soft-drop jet-mass distribution from $pp$ collisions to NNLL accuracy while including nonperturbative corrections through a field-theory based formalism. Using these calculations, we assess the theoretical uncertainties on an $\alpha_s
Externí odkaz:
http://arxiv.org/abs/2210.04901
Publikováno v:
SpringerBriefs in Physics (2023), ISBN 978-3-031-18258-7
Can the S-matrix be complexified in a way consistent with causality? Since the 1960's, the affirmative answer to this question has been well-understood for $2 \to 2$ scattering of the lightest particle in theories with a mass gap at low momentum tran
Externí odkaz:
http://arxiv.org/abs/2204.02988
We introduce a method for deriving constraints on the symbol of Feynman integrals from the form of their asymptotic expansions in the neighborhood of Landau loci. In particular, we show that the behavior of these integrals near singular points is dir
Externí odkaz:
http://arxiv.org/abs/2109.09744