Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Chia-Hsien Shen"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 4, Pp 1-30 (2024)
Abstract Effective field theories in flat space and in anti-de Sitter space are constrained by causality and unitarity, often in the form of positivity bounds. Similar bounds have been harder to demonstrate in cosmological backgrounds, where the role
Externí odkaz:
https://doaj.org/article/b3504feda65848b5b75bb5782f4b7f09
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-31 (2023)
Abstract The geometry of field space governs on-shell scattering amplitudes. We formulate a geometric description of effective field theories which extends previous results for scalars and gauge fields to fermions. The field-space geometry reorganize
Externí odkaz:
https://doaj.org/article/aa080eb0f51e41f79fa1076abbb5d6c7
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-53 (2021)
Abstract We present the two-body Hamiltonian and associated eikonal phase, to leading post-Minkowskian order, for infinitely many tidal deformations described by operators with arbitrary powers of the curvature tensor. Scattering amplitudes in moment
Externí odkaz:
https://doaj.org/article/b4b5ca8d554e4b18b2b2cda3d1bfd6a4
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-135 (2019)
Abstract We describe a systematic framework for computing the conservative potential of a compact binary system using modern tools from scattering amplitudes and effective field theory. Our approach combines methods for integration and matching adapt
Externí odkaz:
https://doaj.org/article/28f5a93e8d904e6a96497c6e57b66551
Autor:
Chia-Hsien Shen
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-32 (2018)
Abstract We perturbatively calculate classical radiation in Yang-Mills theory and dilaton gravity, to next-to-leading order in couplings. The radiation is sourced by the scattering of two relativistic massive scalar sources with the dynamical effect
Externí odkaz:
https://doaj.org/article/c37c11a418234a819ad931a8962799dd
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 4, Pp 1-21 (2018)
Abstract We derive the nonlinear sigma model as a peculiar dimensional reduction of Yang-Mills theory. In this framework, pions are reformulated as higher-dimensional gluons arranged in a kinematic configuration that only probes cubic interactions. T
Externí odkaz:
https://doaj.org/article/f9efb8fb43bd4bb79271a8b9bd9749ce
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-28 (2018)
Abstract We derive new amplitudes relations revealing a hidden unity among a wideranging variety of theories in arbitrary spacetime dimensions. Our results rely on a set of Lorentz invariant differential operators which transmute physical tree-level
Externí odkaz:
https://doaj.org/article/2fd36724cb574f33b16d40f3f9c3f28c
Autor:
Michael Ruf, Zvi Bern, Julio Parra-Martinez, Radu Roiban, Chia-Hsien Shen, Mikhail Solon, Mao Zeng
Publikováno v:
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022).
Autor:
Zvi Bern, Julio Parra-Martinez, Radu Roiban, Michael S. Ruf, Chia-Hsien Shen, Mikhail P. Solon, Mao Zeng
We complete the calculation of conservative two-body scattering dynamics at fourth post-Minkowskian order, i.e., O(G⁴) and all orders in velocity, including radiative contributions corresponding to the tail effect in general relativity. As in previ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::243e6d954cef8cec3f277c4250fc9245
https://resolver.caltech.edu/CaltechAUTHORS:20220520-231732000
https://resolver.caltech.edu/CaltechAUTHORS:20220520-231732000
Publikováno v:
Physical Review Letters
We present a new formula for the angular momentum $J^{\mu\nu}$ carried away by gravitational radiation in classical scattering. This formula, combined with the known expression for the radiated linear momentum $P^\mu$, completes the set of radiated P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b59603f49b8a9f91963edacae79b049
http://arxiv.org/abs/2203.04283
http://arxiv.org/abs/2203.04283