Results 11 to 20 of about 4,843 (209)

Bayesian eikonal tomography using Gaussian processes

Seismica, 2023
Eikonal tomography has become a popular methodology for deriving phase velocity maps from surface wave phase delay measurements. Its high efficiency makes it popular for handling datasets deriving from large-N arrays, in particular in the ambient-noise
Jack Muir
doaj   +3 more sources

Worldline proof of eikonal exponentiation

Journal of High Energy Physics
In this paper, working in eikonal approximation, we present a proof for the exponentiation of the 2-body eikonal phase to all orders in the eikonal expansion, for scalar particles interacting electromagnetically or gravitationally.
Yuchen Du, Siddarth Ajith, Ravisankar Rajagopal, Diana Vaman   +3 more
doaj   +2 more sources

Classical eikonal from Magnus expansion

Journal of High Energy Physics
In a classical scattering problem, the classical eikonal is defined as the generator of the canonical transformation that maps in-states to out-states. It can be regarded as the classical limit of the log of the quantum S-matrix. In a classical analog of
Joon-Hwi Kim, Jung-Wook Kim, Sungsoo Kim, Sangmin Lee   +3 more
doaj   +2 more sources

Classical eikonal in relativistic scattering

Journal of High Energy Physics
The classical eikonal is defined to be the generator of all scattering observables in a scattering problem in classical mechanics. It was originally introduced as the log of the quantum S-matrix in the classical limit.
Sungsoo Kim, Hojin Lee, Sangmin Lee
doaj   +2 more sources

The subleading eikonal in supergravity theories [PDF]

Journal of High Energy Physics, 2018
In this paper we study the subleading contributions to eikonal scattering in (super)gravity theories with particular emphasis on the role of both elastic and inelastic scattering processes.
Arnau Koemans Collado, Paolo Di Vecchia, Rodolfo Russo, Steven Thomas   +3 more
doaj   +2 more sources

Observables from the spinning eikonal

Journal of High Energy Physics
Abstract We study the classical dynamics of spinning particles using scattering amplitudes and eikonal exponentiation. We show that observables are determined by a simple algorithm. A wealth of complexity arises in perturbation theory as positions, momenta and spins must be iteratively corrected at each order.
Andres Luna, Nathan Moynihan, Donal O’Connell, Alasdair Ross   +3 more
openaire   +5 more sources

Non-Abelian eikonals [PDF]

Physical Review D, 1997
19 pages ...
Fried, H. M., Gabellini, Y.
openaire   +2 more sources

A Stable Neural Network-Based Eikonal Tomography using Hard-Constrained Measurements

, 2023
Eikonal tomography, or travel time inversion, has been one of the primary seismological tools for decades and has been used to understand Earth’s properties and dynamic processes.
Waheed, Umair bin, Alkhalifah, Tariq Ali, Taufik, Mohammad Hasyim   +2 more
core   +1 more source

Eikonalization of conformal blocks [PDF]

Journal of High Energy Physics, 2015
Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the `eikonalization' of conformal blocks. We show that when an operator $T$ appears in the OPE $\mathcal{O}(x) \mathcal{O}(0)$, then the
Fitzpatrick, A., Kaplan, Jared, Walters, Matthew, Wang, Junpu   +3 more
openaire   +3 more sources

Eikonalization and unitarity constraints [PDF]

The European Physical Journal C, 2000
An extensive generalization of the ordinary and quasi-eikonal methods is presented for the $pp$ and $\bar pp$ elastic scattering amplitudes, which takes into account in a phenomenological way all intermediate multiparticle states involving the crossing even and crossing odd combinations of Reggeons.
Desgrolard, P., Giffon, M., Martynov, E., Predazzi, E.   +3 more
openaire   +3 more sources