271 citations · 1.2k across the 16 of their papers we have counts for
20 papers
Local-in-Time Conservative Binary Dynamics at Fifth Post-Minkowskian and First Self-Force Orders
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +1
We report the local-in-time conservative dynamics of nonspinning binary systems at fifth Post-Minkowskian (5PM) and first self-force (1SF) orders. This follows from an explicit cal…
Local-in-time Conservative Binary Dynamics at Fourth Post-Minkowskian Order
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +1
Leveraging scattering information to describe binary systems in generic orbits requires identifying local- and nonlocal-in-time tail effects. We report here the derivation of the u…
Bootstrapping the relativistic two-body problem
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +1
We describe the formalism to compute gravitational-wave observables for compact binaries via the effective field theory framework in combination with modern tools from collider phy…
Radiation Reaction and Gravitational Waves at Fourth Post-Minkowskian Order
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +2
We obtain the total impulse in the scattering of non-spinning binaries in general relativity at fourth Post-Minkowskian order, i.e. , including linear, nonlinear, an…
Machine Learning Post-Minkowskian Integrals
Ryusuke Jinno, Gregor Kälin, Zhengwen Liu +1
We study a neural network framework for the numerical evaluation of Feynman loop integrals that are fundamental building blocks for perturbative computations of physical observable…
Tree-level soft emission of a quark pair in association with a gluon
Vittorio Del Duca, Claude Duhr, Rayan Haindl +1
We compute the tree-level current for the emission of a soft quark-antiquark pair in association with a gluon. This soft current is the last missing ingredient to understand the in…
Conservative Dynamics of Binary Systems at Fourth Post-Minkowskian Order in the Large-eccentricity Expansion
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +1
We compute the conservative dynamics of non-spinning binaries at fourth Post-Minkowskian order in the large-eccentricity limit, including both potential and radiation-reaction tail…
The old conformal bootstrap revisited
Pedro Liendo, Zhengwen Liu, Junchen Rong
The "old" conformal bootstrap was originally formulated by Migdal and Polyakov (MP) as a method for calculating conformal dimensions self-consistently. In this work we revisit the…
Infrared photons and asymptotic symmetries
Zhengwen Liu, Pujian Mao
S-matrix elements exhibit universal factorization when multiple infrared photons are emitted in scattering processes. We explicitly show that the leading soft factorization of tree…
Dynamics of Binary Systems to Fourth Post-Minkowskian Order from the Effective Field Theory Approach
Christoph Dlapa, Gregor Kälin, Zhengwen Liu +1
We present the contribution from potential interactions to the dynamics of non-spinning binaries to fourth Post-Minkowskian (4PM) order. This is achieved by computing the scatterin…
Spin Effects in the Effective Field Theory Approach to Post-Minkowskian Conservative Dynamics
Zhengwen Liu, Rafael A. Porto, Zixin Yang
Building upon the worldline effective field theory (EFT) formalism for spinning bodies developed for the Post-Newtonian regime, we generalize the EFT approach to Post-Minkowskian (…
Conservative Tidal Effects in Compact Binary Systems to Next-to-Leading Post-Minkowskian Order
Gregor Kälin, Zhengwen Liu, Rafael A. Porto
Using the Effective Field Theory approach together with the Boundary-to-Bound map, we compute the next-to-leading order (NLO) Post-Minkowskian (PM) tidal effects in the conservativ…
Conservative Dynamics of Binary Systems to Third Post-Minkowskian Order from the Effective Field Theory Approach
Gregor Kälin, Zhengwen Liu, Rafael A. Porto
We derive the conservative dynamics of non-spinning binaries to third Post-Minkowskian order, using the Effective Field Theory (EFT) approach introduced in [2006.01184] together wi…
Multi-Regge kinematics and the scattering equations
Claude Duhr, Zhengwen Liu
We study the solutions to the scattering equations in various quasi-multi-Regge regimes where the produced particles are ordered in rapidity. We observe that in all cases the solut…
Gravitational Scattering in the High-Energy Limit
Zhengwen Liu
Any gravitational scattering amplitude takes a remarkably simple factorized form at tree level in multi-Regge kinematics (MRK), where the produced particles are strongly ordered in…
Bootstrapping solutions of scattering equations
Zhengwen Liu, Xiaoran Zhao
The scattering equations are a set of algebraic equations connecting the kinematic space of massless particles and the moduli space of Riemann spheres with marked points. We presen…
A note on connected formula for form factors
Song He, Zhengwen Liu
In this note we study the connected prescription, originally derived from Witten's twistor string theory, for tree-level form factors in super-Yang-Mills theory. The c…
Scattering Equations, Twistor-string Formulas and Double-soft Limits in Four Dimensions
Song He, Zhengwen Liu, Jun-Bao Wu
We study scattering equations and formulas for tree amplitudes of various theories in four dimensions, in terms of spinor helicity variables and on-shell superspace for supersymmet…
Soft theorems in maximally supersymmetric theories
Zheng-Wen Liu
In this paper we study the supersymmetric generalization of the new soft theorem which was proposed by Cachazo and Strominger recently. At tree level, we prove the validity of the…
M5-branes in AdS spacetime
De-Sheng Li, Zheng-Wen Liu, Jun-Bao Wu +1
In this paper, we study the M5-brane configurations in AdS spacetime. We consider the configurations with an AdS factor embedding into AdS, and manage…