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Effective Hamiltonians and Counterterms for Hamiltonian Truncation
We outline a procedure for applying Hamiltonian Truncation to Quantum Field Theories (QFTs) that have UV divergences. To do this, we derive a novel...
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Form factors and spectral densities from Lightcone Conformal Truncation
We use the method of Lightcone Conformal Truncation (LCT) to obtain form factors and spectral densities of local operators 𝒪 in ϕ 4 theory in two...
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Hamiltonian Truncation with larger dimensions
Hamiltonian Truncation (HT) is a numerical approach for calculating observables in a Quantum Field Theory non-perturbatively. This approach can be...
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D4-branes wrapped on four-dimensional orbifolds through consistent truncation
We construct a consistent truncation of six-dimensional matter coupled F (4) gauged supergravity on a cornucopia of two-dimensional surfaces including...
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Chiral limit of 2d QCD revisited with lightcone conformal truncation
We study the chiral limit of 2d QCD with a single quark flavor at finite N c using LCT. By modifying the LCT basis according to the quark mass in a...
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Bootstrap** 2d ϕ4 theory with Hamiltonian truncation data
We combine the methods of Hamiltonian Truncation and the recently proposed generalisation of the S-matrix bootstrap that includes local operators to...
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Error statistics and scalability of quantum error mitigation formulas
Quantum computing promises advantages over classical computing in many problems. Nevertheless, noise in quantum devices prevents most quantum...
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Hamiltonian truncation in Anti-de Sitter spacetime
Quantum Field Theories (QFTs) in Anti-de Sitter (AdS) spacetime are often strongly coupled when the radius of AdS is large, and few methods are...
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Adaptive quantum error mitigation using pulse-based inverse evolutions
Quantum Error Mitigation (QEM) enables the extraction of high-quality results from the presently-available noisy quantum computers. In this approach,...
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Nonperturbative dynamics of (2+1)d ϕ4-theory from Hamiltonian truncation
We use Lightcone Conformal Truncation (LCT)—a version of Hamiltonian truncation — to study the nonperturbative, real-time dynamics of ϕ 4 -theory in...
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Solving the 2D SUSY Gross-Neveu-Yukawa model with conformal truncation
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...
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Easy bootstrap for the 3D Ising model: a hybrid approach of the lightcone bootstrap and error minimization methods
As a simple lattice model that exhibits a phase transition, the Ising model plays a fundamental role in statistical and condensed matter physics. The...
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Semi-local Nuclear Forces from Chiral EFT: State-of-the-Art and Challenges
Recently, a new generation of nuclear forces has been developed in the framework of chiral EFT. An important feature of these potentials is a novel...
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Near-term quantum computing techniques: Variational quantum algorithms, error mitigation, circuit compilation, benchmarking and classical simulation
Quantum computing is a game-changing technology for global academia, research centers and industries including computational science, mathematics,...
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LSZ in action: extracting form factors from correlators nonperturbatively in 2d ϕ4 theory
In this paper, we compute multiparticle form factors of local operators in 2d ϕ 4 theory using a recently proposed method [
1 ] for efficiently... -
Real-space RG, error correction and Petz map
There are two parts to this work: first, we study the error correction properties of the real-space renormalization group (RG). The long-distance...
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Local unitarity: cutting raised propagators and localising renormalisation
The Local Unitarity (LU) representation of differential cross-sections locally realises the cancellations of infrared singularities predicted by the...
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Unravelling quantum dynamics using flow equations
The study of many-body quantum dynamics in strongly correlated systems is extremely challenging. To date, few numerical methods exist that are...
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On stability issues of the HEOM method
The Hierarchical Equations of Motion (HEOM) method has become one of the cornerstones in the simulation of open quantum systems and their dynamics....
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Semi-local Nuclear Forces From Chiral EFT: State-of-the-Art and Challenges
Recently, a new generation of nuclear forces has been developed in the framework of chiral EFT. An important feature of these potentials is a novel...