Zobrazeno 1 - 10
of 6 849
pro vyhledávání: '"scattering amplitudes"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-16 (2024)
Abstract It was recently conjectured that a certain vacuum Kerr-Schild spacetime, which may be regarded as a self-dual analog of the Kerr metric, is equivalent to the self-dual Taub-NUT instanton. We confirm this conjecture by applying the Cartan-Kar
Externí odkaz:
https://doaj.org/article/10c200e66a004fb5a4359f5185dae7a6
Autor:
Bingchu Fan, Zhong-Zhi Xianyu
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-65 (2024)
Abstract The correlators of large-scale fluctuations belong to the most important observables in modern cosmology. Recently, there have been considerable efforts in analytically understanding the cosmological correlators and the related wavefunction
Externí odkaz:
https://doaj.org/article/38def92f0dee453a949af84ee32380f9
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-22 (2024)
Abstract Parameters in an effective field theory can be subject to certain positivity bounds if one requires a UV completion that obeys the fundamental principles of quantum field theory. These bounds are relatively straightforward at the tree level,
Externí odkaz:
https://doaj.org/article/3207707cacd34b37a00f8264173ea954
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-33 (2024)
Abstract We derive analytic all-order-in-spin expressions for the leading-order time-domain waveforms generated in the scattering of two Kerr black holes with arbitrary masses and spin vectors in the presence of all independent cubic deformations of
Externí odkaz:
https://doaj.org/article/167efce9acaf42faa211a2a22c72a5ed
Autor:
Francesco Bertucci, Johan Henriksson, Brian McPeak, Sara Ricossa, Francesco Riva, Alessandro Vichi
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-54 (2024)
Abstract In this paper, we explore positivity bounds for the effective field theory (EFT) of a single weakly coupled massive vector field. The presence of both mass and spin makes the crossing properties of the amplitudes vastly complicated — we ad
Externí odkaz:
https://doaj.org/article/08ff9842dd974905a02986fc754cf7d2
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-38 (2024)
Abstract We derive the dimension-8 standard-model effective theory (SMEFT) contact terms relevant for vector-pair production at the LHC and lepton colliders. We first list the relevant dimension-8 massless SMEFT amplitudes, and then obtain the low-en
Externí odkaz:
https://doaj.org/article/ae4f4477709640259c13d49a395cadc3
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-23 (2024)
Abstract We study the form factor of the lowest component of the stress-tensor multiplet away from the origin of the moduli space in the spontaneously broken, aka Coulomb, phase of the maximally supersymmetric Yang-Mills theory for decay into three m
Externí odkaz:
https://doaj.org/article/d13879e8019946daa5995d1d70d42db3
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-32 (2024)
Abstract We provide a worldline representation of the one-loop effective action for a Dirac particle coupled to external scalar, pseudoscalar, vector and axialvector fields. Extending previous work by two of the authors on the pure vector-axialvector
Externí odkaz:
https://doaj.org/article/ada7580c789242ba8d16df9dcc8c8d1e
Autor:
Ira Z. Rothstein, Michael Saavedra
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-28 (2024)
Abstract The asymptotic kinematic limits of S-matrices are dominated by large logarithms which, roughly speaking, fall into two categories: those which are controlled by a renormalization group (RG) scale, which we may think of as logs involving rati
Externí odkaz:
https://doaj.org/article/e05a95ffc75f46f9a58bde3042b259dc
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-46 (2024)
Abstract Using universal predictions provided by classical soft theorems, we revisit the energy emission spectrum for gravitational scatterings of compact objects in the low-frequency expansion. We calculate this observable beyond the zero-frequency
Externí odkaz:
https://doaj.org/article/3138e53ff0ae4803a7b39915a20aeaab