140 citations · 251 across the 14 of their papers we have counts for
14 papers
Toolkit for General 2d Scalar Potential in LCT
A. Liam Fitzpatrick, Emanuel Katz, Yuan Xin
We present efficient algorithms for obtaining the Hamiltonian in Lightcone Conformal Truncation (LCT) for a 2d scalar field with a generic potential. We apply this method to the si…
Lightcone Hamiltonian for Ising Field Theory I: T < T_c
A. Liam Fitzpatrick, Emanuel Katz, Yuan Xin
We study 2d Ising Field Theory (IFT) in the low-temperature phase in lightcone quantization, and show that integrating out zero modes generates a very compact form for the effectiv…
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…
Bootstrapping the gap in quantum spin systems
Colin Oscar Nancarrow, Yuan Xin
In this work we report on a new bootstrap method for quantum mechanical problems that closely mirrors the setup from conformal field theory (CFT). We use the equations of motion to…
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…
Chiral Limit of 2d QCD Revisited with Lightcone Conformal Truncation
Nikhil Anand, A. Liam Fitzpatrick, Emanuel Katz +1
We study the chiral limit of 2d QCD with a single quark flavor at finite using LCT. By modifying the LCT basis according to the quark mass in a manner motivated by 't Hooft's…
Introduction to Lightcone Conformal Truncation: QFT Dynamics from CFT Data
Nikhil Anand, A. Liam Fitzpatrick, Emanuel Katz +3
We both review and augment the lightcone conformal truncation (LCT) method. LCT is a Hamiltonian truncation method for calculating dynamical quantities in QFT in infinite volume. T…
Quantum simulation of quantum field theories as quantum chemistry
Junyu Liu, Yuan Xin
Conformal truncation is a powerful numerical method for solving generic strongly-coupled quantum field theories based on purely field-theoretic technics without introducing lattice…
Solving the 2D SUSY Gross-Neveu-Yukawa Model with Conformal Truncation
A. Liam Fitzpatrick, Emanuel Katz, Matthew T. Walters +1
We use Lightcone Conformal Truncation to analyze the RG flow of the two-dimensional supersymmetric Gross-Neveu-Yukawa theory, i.e. the theory of a real scalar superfield with a $\m…
The Most Irrational Rational Theories
Nathan Benjamin, Ethan Dyer, A. Liam Fitzpatrick +1
We propose a two-parameter family of modular invariant partition functions of two-dimensional conformal field theories (CFTs) holographically dual to pure three-dimensional gravity…
Supersymmetric SYK model and random matrix theory
Tianlin Li, Junyu Liu, Yuan Xin +1
In this paper, we investigate the effect of supersymmetry on the symmetry classification of random matrix theory ensembles. We mainly consider the random matrix behaviors in the $\…
Top-forms of Leading Singularities in Nonplanar Multi-loop Amplitudes
Baoyi Chen, Gang Chen, Yeuk-Kwan E. Cheung +2
The on-shell diagram is a very important tool in studying scattering amplitudes. In this paper we discuss the on-shell diagrams without external BCFW-bridges. We introduce an extra…
Top-forms of Leading Singularities in Nonplanar Multi-loop Amplitudes
Baoyi Chen, Gang Chen, Yeuk-Kwan E. Cheung +2
Bipartite on-shell diagrams are the latest tool in constructing scattering amplitudes. In this paper we prove that a Britto-Cachazo-Feng-Witten (BCFW)-decomposable on-shell diagram…
Nonplanar On-shell Diagrams and Leading Singularities of Scattering Amplitudes
Baoyi Chen, Gang Chen, Yeuk-Kwan E. Cheung +3
Bipartite on-shell diagrams are the latest tool in constructing scattering amplitudes. In this paper we prove that a Britto-Cachazo-Feng-Witten (BCFW)-decomposable on-shell diagram…