Search Results for author: Karl Jansen

Found 8 papers, 2 papers with code

Flow-based Sampling for Entanglement Entropy and the Machine Learning of Defects

no code implementations18 Oct 2024 Andrea Bulgarelli, Elia Cellini, Karl Jansen, Stefan Kühn, Alessandro Nada, Shinichi Nakajima, Kim A. Nicoli, Marco Panero

We introduce a novel technique to numerically calculate R\'enyi entanglement entropies in lattice quantum field theory using generative models.

Physics-Informed Bayesian Optimization of Variational Quantum Circuits

1 code implementation NeurIPS 2023 Kim A. Nicoli, Christopher J. Anders, Lena Funcke, Tobias Hartung, Karl Jansen, Stefan Kühn, Klaus-Robert Müller, Paolo Stornati, Pan Kessel, Shinichi Nakajima

In this paper, we propose a novel and powerful method to harness Bayesian optimization for Variational Quantum Eigensolvers (VQEs) -- a hybrid quantum-classical protocol used to approximate the ground state of a quantum Hamiltonian.

Bayesian Optimization Inductive Bias

Detecting and Mitigating Mode-Collapse for Flow-based Sampling of Lattice Field Theories

no code implementations27 Feb 2023 Kim A. Nicoli, Christopher J. Anders, Tobias Hartung, Karl Jansen, Pan Kessel, Shinichi Nakajima

In this work, we first point out that the tunneling problem is also present for normalizing flows but is shifted from the sampling to the training phase of the algorithm.

Multilevel Monte Carlo for quantum mechanics on a lattice

1 code implementation7 Aug 2020 Karl Jansen, Eike Hermann Müller, Robert Scheichl

This paper discusses hierarchical sampling methods to tame this growth in autocorrelations.

High Energy Physics - Lattice Numerical Analysis Numerical Analysis Computational Physics 81-08, 81T25, 65Y20, 60J22 F.2; J.2

Estimation of Thermodynamic Observables in Lattice Field Theories with Deep Generative Models

no code implementations14 Jul 2020 Kim A. Nicoli, Christopher J. Anders, Lena Funcke, Tobias Hartung, Karl Jansen, Pan Kessel, Shinichi Nakajima, Paolo Stornati

In this work, we demonstrate that applying deep generative machine learning models for lattice field theory is a promising route for solving problems where Markov Chain Monte Carlo (MCMC) methods are problematic.

BIG-bench Machine Learning

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