98 citations · 1.1k across the 39 of their papers we have counts for
26 papers · 1 filter
Quantum Field Theory, Worldline Theory, and Spin Magnitude Change in Orbital Evolution
Zvi Bern, Dimitrios Kosmopoulos, Andres Luna +4
A previous paper~\cite{Bern:2022kto} identified a puzzle stemming from the amplitudes-based approach to spinning bodies in general relativity: additional Wilson coefficients appear…
Comparison of post-Minkowskian and self-force expansions: Scattering in a scalar charge toy model
Leor Barack, Zvi Bern, Enrico Herrmann +8
We compare numerical self-force results and analytical fourth-order post-Minkowskian (PM) calculations for hyperbolic-type scattering of a point-like particle carrying a scalar cha…
The Sub-Leading Scattering Waveform from Amplitudes
Aidan Herderschee, Radu Roiban, Fei Teng
We compute the next-to-leading order term in the scattering waveform of uncharged black holes in classical general relativity and of half-BPS black holes in supergr…
Perfecting one-loop BCJ numerators in SYM and supergravity
Alex Edison, Song He, Henrik Johansson +3
We take a major step towards computing -dimensional one-loop amplitudes in general gauge theories, compatible with the principles of unitarity and the color-kinematics duality.…
Binary Dynamics Through the Fifth Power of Spin at
Zvi Bern, Dimitrios Kosmopoulos, Andrés Luna +2
We use a previously developed scattering-amplitudes-based framework for determining two-body Hamiltonians for generic binary systems with arbitrary spin . By construction this f…
On the Differential Representation and Color-Kinematics Duality of AdS Boundary Correlators
Aidan Herderschee, Radu Roiban, Fei Teng
The AdS boundary correlators and their dual correlation functions of boundary operators have been the main dynamic observables of the holographic duality relating a bulk AdS theory…
One-loop matrix elements of effective superstring interactions: -expanding loop integrands
Alex Edison, Max Guillen, Henrik Johansson +2
In the low-energy effective action of string theories, non-abelian gauge interactions and supergravity are augmented by infinite towers of higher-mass-dimension operators. We propo…
BCJ Amplitude Relations for Anti-de Sitter Boundary Correlators in Embedding Space
Pranav Diwakar, Aidan Herderschee, Radu Roiban +1
We generalize the color/kinematics duality of flat-space scattering amplitudes to the embedding space formulation of AdS boundary correlators. Kinematic numerators and propagators…
Next-to-MHV Yang-Mills kinematic algebra
Gang Chen, Henrik Johansson, Fei Teng +1
Kinematic numerators of Yang-Mills scattering amplitudes possess a rich Lie algebraic structure that suggest the existence of a hidden infinite-dimensional kinematic algebra. Expli…
Open associahedra and scattering forms
Aidan Herderschee, Fei Teng
We continue the study of open associahedra associated with bi-color scattering amplitudes initiated in arXiv:1912.08307. We focus on the facet geometries of the open associahedra,…
NLO gravitational quartic-in-spin interaction
Michèle Levi, Fei Teng
In this paper we derive for the first time the complete gravitational quartic-in-spin interaction of generic compact binaries at the next-to-leading order in the post-Newtonian (PN…
One-loop Correlators and BCJ Numerators from Forward Limits
Alex Edison, Song He, Oliver Schlotterer +1
We present new formulas for one-loop ambitwistor-string correlators for gauge theories in any even dimension with arbitrary combinations of gauge bosons, fermions and scalars runni…
Efficient Calculation of Crossing Symmetric BCJ Tree Numerators
Alex Edison, Fei Teng
In this paper, we propose an improved method for directly calculating double-copy-compatible tree numerators in (super-)Yang-Mills and Yang-Mills-scalar theories. Our new scheme ge…
On Positive Geometry and Scattering Forms for Matter Particles
Aidan Herderschee, Song He, Fei Teng +1
We initiate the study of positive geometry and scattering forms for tree-level amplitudes with matter particles in the (anti-)fundamental representation of the color/flavor group.…
String Correlators: Recursive Expansion, Integration-by-Parts and Scattering Equations
Song He, Fei Teng, Yong Zhang
We further elaborate on the general construction proposed in arXiv:1812.03369, which connects, via tree-level double copy, massless string amplitudes with color-ordered QFT amplitu…
On the kinematic algebra for BCJ numerators beyond the MHV sector
Gang Chen, Henrik Johansson, Fei Teng +1
The duality between color and kinematics present in scattering amplitudes of Yang-Mills theory strongly suggest the existence of a hidden kinematic Lie algebra that controls the ga…
String amplitudes from field-theory amplitudes and vice versa
Song He, Fei Teng, Yong Zhang
We present an integration-by-parts reduction of any massless tree-level string correlator to an equivalence class of logarithmic functions, which can be used to define a field-theo…
Unraveling conformal gravity amplitudes
Henrik Johansson, Gustav Mogull, Fei Teng
Conformal supergravity amplitudes are obtained from the double-copy construction using gauge-theory amplitudes, and compared to direct calculations starting from conformal supergra…
Permutation in the CHY-Formulation
Rijun Huang, Fei Teng, Bo Feng
The CHY-integrand of bi-adjoint cubic scalar theory is a product of two PT-factors. This pair of PT-factors can be interpreted as defining a permutation. We introduce the cycle rep…
Expansion of All Multitrace Tree Level EYM Amplitudes
Yi-Jian Du, Bo Feng, Fei Teng
In this paper, we investigate the expansion of tree level multitrace Einstein-Yang-Mills (EYM) amplitudes. First, we propose two types of recursive expansions of tree level EYM amp…
BCJ numerators from reduced Pfaffian
Yi-Jian Du, Fei Teng
By expanding the reduced Pfaffian in the tree level Cachazo-He-Yuan (CHY) integrands for Yang-Mills (YM) and nonlinear sigma model (NLSM), we can get the Bern-Carrasco-Johansson (B…
Expanding Einstein-Yang-Mills by Yang-Mills in CHY frame
Fei Teng, Bo Feng
Using the Cachazo-He-Yuan (CHY) formalism, we prove a recursive expansion of tree level single trace Einstein-Yang-Mills (EYM) amplitudes with arbitrary number of gluons and gravit…
Correspondence between Solutions of Scattering Equations and Scattering Amplitudes in Four Dimensions
Yi-Jian Du, Fei Teng, Yong-Shi Wu
In this talk, we review our recent work on direct evaluation of tree-level MHV amplitudes by Cachazo-He-Yuan (CHY) formula. We also investigate the correspondence between solutions…
Direct Evaluation of -point single-trace MHV amplitudes in 4d Einstein-Yang-Mills theory using the CHY Formalism
Yi-Jian Du, Fei Teng, Yong-Shi Wu
In this paper we extend our techniques, developed in a previous paper (Du, etc, JHEP 05(2016)086) for direct evaluation of arbitrary -point tree-level MHV amplitudes in 4d Yang-…