1.1k citations · 6.5k across the 64 of their papers we have counts for
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Higher Eisenstein Series and a Duality-Invariant Distance Measure
Nathan Benjamin, A. Liam Fitzpatrick
The Petersson inner product is a natural inner product on the space of modular invariant functions. We derive a formula, written as a convergent sum over elementary functions, for…
LSZ in Action: Extracting Form Factors from Correlators Nonperturbatively in 2d Theory
A. Liam Fitzpatrick, Zhengxian Mei
In this paper, we compute multiparticle form factors of local operators in 2d theory using a recently proposed method [1] for efficiently implementing the LSZ prescription wi…
Improving Modular Bootstrap Bounds with Integrality
A. Liam Fitzpatrick, Wei Li
We implement methods that efficiently impose integrality -- i.e., the condition that the coefficients of characters in the partition function must be integers -- into numerical mod…
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…