77 citations · 258 across the 11 of their papers we have counts for
11 papers
Large Momentum EFT and Lightcone Quantization
Hongbin Chen, A. Liam Fitzpatrick, Emanuel Katz +1
We develop methods for computing the effective action at infinite momentum for QFTs at finite volume which do not rely on the theory having a Lagrangian description. We do t…
Nonperturbative Bounds on Scattering of Massive Scalar Particles in
Hongbin Chen, A. Liam Fitzpatrick, Denis Karateev
We study two-to-two scattering amplitudes of a scalar particle of mass . For simplicity, we assume the presence of symmetry and that the particle is $\mathbb{Z}_2…
Giving Hamiltonian Truncation a Boost
Hongbin Chen, A. Liam Fitzpatrick, Emanuel Katz +1
We study Hamiltonian truncation in boosted frames. We consider the thermal and magnetic field deformations of the 2d Ising model using TCSA at finite momentum. We find that even wi…
Bootstrapping 2d Theory with Hamiltonian Truncation Data
Hongbin Chen, A. Liam Fitzpatrick, Denis Karateev
We combine the methods of Hamiltonian Truncation and the recently proposed generalisation of the S-matrix bootstrap that includes local operators to determine the two-particle scat…
Form Factors and Spectral Densities from Lightcone Conformal Truncation
Hongbin Chen, A. Liam Fitzpatrick, Denis Karateev
We use the method of Lightcone Conformal Truncation (LCT) to obtain form factors and spectral densities of local operators in theory in two dimensions. We show…
AdS Reconstruction with General Gravitational Dressings
Hongbin Chen, Jared Kaplan, Utkarsh Sharma
The gauge redundancy of quantum gravity makes the definition of local operators ambiguous, as they depend on the choice of gauge or on a `gravitational dressing' analogous to a cho…
The Bulk-to-Boundary Propagator in Black Hole Microstate Backgrounds
Hongbin Chen, A. Liam Fitzpatrick, Jared Kaplan +1
First-quantized propagation in quantum gravitational AdS backgrounds can be exactly reconstructed using CFT data and Virasoro symmetry. We develop methods to compute the bu…
The AdS Propagator and the Fate of Locality
Hongbin Chen, A. Liam Fitzpatrick, Jared Kaplan +1
We recently used Virasoro symmetry considerations to propose an exact formula for a bulk proto-field in AdS. In this paper we study the propagator . We s…
An Exact Operator That Knows Its Location
Nikhil Anand, Hongbin Chen, A. Liam Fitzpatrick +2
We use conformal symmetry to define an AdS proto-field as an exact linear combination of Virasoro descendants of a CFT primary operator . We find that both…
A Numerical Approach to Virasoro Blocks and the Information Paradox
Hongbin Chen, Charles Hussong, Jared Kaplan +1
We chart the breakdown of semiclassical gravity by analyzing the Virasoro conformal blocks to high numerical precision, focusing on the heavy-light limit corresponding to a light p…
Degenerate Operators and the Expansion: Lorentzian Resummations, High Order Computations, and Super-Virasoro Blocks
Hongbin Chen, A. Liam Fitzpatrick, Jared Kaplan +2
One can obtain exact information about Virasoro conformal blocks by analytically continuing the correlators of degenerate operators. We argued in recent work that this technique ca…