Results 71 to 80 of about 2,054,858 (263)

General Relativity from Scattering Amplitudes. [PDF]

Physical Review Letters, 2018
Weoutline the program to apply modern quantum field theory methods to calculate observables in classical general relativity through a truncation to classical terms of the multigraviton, two-body, on-shell scattering amplitudes between massive fields ...
N. Bjerrum-Bohr, P. Damgaard, G. Festuccia, L. Planté, P. Vanhove, P. Vanhove   +5 more
semanticscholar   +1 more source

Schwarzschild-Tangherlini metric from scattering amplitudes in various dimensions [PDF]

, 2020
We derive the static Schwarzschild-Tangherlini metric by extracting the classical contributions from the multi-loop vertex functions of a graviton emitted from a massive scalar field.
Stavros Mougiakakos, P. Vanhove
semanticscholar   +1 more source

Crossing beyond scattering amplitudes

Journal of High Energy Physics
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 ...
Simon Caron-Huot, Mathieu Giroux, Holmfridur S. Hannesdottir, Sebastian Mizera   +3 more
doaj   +1 more source

Massive scattering amplitudes in six dimensions

Journal of High Energy Physics, 2019
We show that a natural spinor-helicity formalism that can describe massive scattering amplitudes exists in D = 6 dimensions. This is arranged by having helicity spinors carry an index in the Dirac spinor 4 of the massive little group, SO(5) ∼ Sp(4).
Rishabh Jha, Chethan Krishnan, K. V. Pavan Kumar   +2 more
doaj   +1 more source

Recursion relations and scattering amplitudes in the light-front formalism [PDF]

, 2013
The fragmentation functions and scattering amplitudes are investigated in the framework of light-front perturbation theory. It is demonstrated that, the factorization property of the fragmentation functions implies the recursion relations for the off-shell scattering amplitudes which are light-front analogs of the Berends-Giele relations.
arxiv   +1 more source

Improving organ dose sparing in left‐sided breast cancer with yaw‐limited volumetric modulated arc therapy: A dosimetric comparison to conventional and intensity modulated radiation therapy approaches

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background To assess the dose‐sparing capabilities of a yaw‐limited volumetric modulated arc therapy (YL_VMAT) beam setup for adjacent organs at risk (OAR) in comparison with 3D‐conventional radiation therapy (3D‐CRT), intensity‐modulated radiation therapy (IMRT) and conventional VMAT for radiation therapy in left‐sided breast cancer patients.
Gerhard Pollul, Sascha Grossmann, Heiko Karle, Tilman Bostel, Heinz Schmidberger   +4 more
wiley   +1 more source

Structure of massive gauge/gravity scattering amplitudes, equivalence theorems, and extended double-copy with compactified warped space

Journal of High Energy Physics
We study the structure of scattering amplitudes of massive Kaluza-Klein (KK) states in the compactified 5-dimensional warped gauge and gravity theories.
Yanfeng Hang, Wei-Wei Zhao, Hong-Jian He, Yin-Long Qiu   +3 more
doaj   +1 more source

Spinning amplitudes from scalar amplitudes

Journal of High Energy Physics, 2021
We provide a systematic method to compute tree-level scattering amplitudes with spinning external states from amplitudes with scalar external states in arbitrary spacetime dimensions.
Mahesh K. N. Balasubramanian, Raj Patil, Arnab Rudra   +2 more
doaj   +1 more source

Recurrence relations of Kummer functions and Regge string scattering amplitudes [PDF]

, 2012
We discover an infinite number of recurrence relations among Regge string scattering amplitudes \cite{bosonic,RRsusy} of different string states at arbitrary mass levels in the open bosonic string theory. As a result, all Regge string scattering amplitudes can be algebraically solved up to multiplicative factors.
arxiv   +1 more source

Distinct Network Morphologies from In Situ Polymerization of Microtubules in Giant Polymer‐Lipid Hybrid Vesicles

Advanced Biology, EarlyView.
The successful in situ polymerization of microtubules in giant polymer‐lipid hybrid vesicles is illustrated. The microtubules formed in the giant hybrid vesicles exhibit different morphologies including lumenal network formation and membrane association. Abstract Creating artificial cells with a dynamic cytoskeleton, akin to those in living cells, is a
Paula De Dios Andres, Mousumi Akter, Cecilie Ryberg, Brigitte Städler, Allen P. Liu   +4 more
wiley   +1 more source