Zobrazeno 1 - 10
of 61
pro vyhledávání: '"De Angelis, Stefano"'
We study on-shell scattering amplitudes for continuous-spin particles. Poincar\'e invariance, little-group $ISO(2)$ covariance, analyticity, and on-shell factorization (unitarity) impose stringent conditions on these amplitudes. We solve them by real
Externí odkaz:
http://arxiv.org/abs/2406.17017
Autor:
Brunello, Giacomo, De Angelis, Stefano
We combine the observable-based formalism (KMOC), the analytic properties of the scattering amplitude, generalised unitarity and the heavy-mass expansion with a newly introduced IBP reduction for Fourier integrals, to provide an efficient framework f
Externí odkaz:
http://arxiv.org/abs/2403.08009
Autor:
Bini, Donato, Damour, Thibault, De Angelis, Stefano, Geralico, Andrea, Herderschee, Aidan, Roiban, Radu, Teng, Fei
Publikováno v:
Phys.Rev.D 109 (2024), 125008
We revisit the quantum-amplitude-based derivation of the gravitational waveform emitted by the scattering of two spinless massive bodies at the third order in Newton's constant, $h \sim G+G^2+G^3$ (one-loop level), and correspondingly update its comp
Externí odkaz:
http://arxiv.org/abs/2402.06604
Publikováno v:
PhysRevD.110.L041502 (2024)
We provide the analytic waveform in time domain for the scattering of two Kerr black holes at leading order in the post-Minkowskian expansion and up to fourth order in both spins. The result is obtained by the generalization of the KMOC formalism to
Externí odkaz:
http://arxiv.org/abs/2309.17429
Autor:
De Angelis, Stefano, Durieux, Gauthier
Publikováno v:
SciPost Phys. 16 (2024) 071
We present a new on-shell method for the matching of ultraviolet models featuring massive states onto their massless effective field theory. We employ a dispersion relation in the space of complex momentum dilations to capture, in a single variable,
Externí odkaz:
http://arxiv.org/abs/2308.00035
Autor:
Brandhuber, Andreas, Brown, Graham R., Chen, Gang, De Angelis, Stefano, Gowdy, Joshua, Travaglini, Gabriele
Using a heavy-mass effective field theory (HEFT), we study gravitational-wave emission in the scattering of two spinless black holes or neutron stars of arbitrary masses at next-to-leading order in the Post-Minkowskian expansion. We compute the contr
Externí odkaz:
http://arxiv.org/abs/2303.06111
Publikováno v:
SciPost Phys. 14, 148 (2023)
We study the entanglement and the energy density of the radiation emitted after a local quench in a boundary conformal field theory. We use the operator product expansion (OPE) to predict the early- and late-time behavior of the entanglement entropy
Externí odkaz:
http://arxiv.org/abs/2203.10103
Autor:
De Angelis, Stefano
We present for the first time an efficient algorithm to find a basis of kinematically independent structures built of (massless and massive) spinor helicity variables in four dimensions. This method provides a classification of independent contact te
Externí odkaz:
http://arxiv.org/abs/2202.02681
We present the Standard Model Effective Field Theories (SMEFT) from purely on-shell arguments. Starting from a few basic assumptions such as Poincar\'e invariance and locality, we classify all the renormalisable and non-renormalisable interactions at
Externí odkaz:
http://arxiv.org/abs/2108.03669
Autor:
Giovanni Tondini, Giovanni Staurenghi, Sara Bochicchio, Angelica Dipinto, Matteo Giuseppe Cereda, De Angelis Stefano
Publikováno v:
American Journal of Ophthalmology Case Reports, Vol 32, Iss , Pp 101967- (2023)
Purpose: To describe a clinical case of lumen obstruction a few days after implantation of the PreserFlo® Microshunt which has been resolved by anterior vitrectomy. Observation: A 76-year-old patient with advanced and progressing primary open-angle
Externí odkaz:
https://doaj.org/article/095ee2c739a141d493532b6f7af457af