no code implementations • 18 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.
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.
no code implementations • 27 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.
no code implementations • 17 Jul 2022 • Lorenz Vaitl, Kim A. Nicoli, Shinichi Nakajima, Pan Kessel
We propose an algorithm to estimate the path-gradient of both the reverse and forward Kullback-Leibler divergence for an arbitrary manifestly invertible normalizing flow.
1 code implementation • 17 Jun 2022 • Lorenz Vaitl, Kim A. Nicoli, Shinichi Nakajima, Pan Kessel
Recent work has established a path-gradient estimator for simple variational Gaussian distributions and has argued that the path-gradient is particularly beneficial in the regime in which the variational distribution approaches the exact target distribution.
no code implementations • 22 Nov 2021 • Kim A. Nicoli, Christopher Anders, Lena Funcke, Tobias Hartung, Karl Jansen, Pan Kessel, Shinichi Nakajima, Paolo Stornati
Crucially, these models allow for the direct estimation of the free energy at a given point in parameter space.
no code implementations • 14 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.
no code implementations • 29 Oct 2019 • Kim A. Nicoli, Shinichi Nakajima, Nils Strodthoff, Wojciech Samek, Klaus-Robert Müller, Pan Kessel
We propose a general framework for the estimation of observables with generative neural samplers focusing on modern deep generative neural networks that provide an exact sampling probability.
no code implementations • 23 Oct 2018 • Kim A. Nicoli, Pan Kessel, Michael Gastegger, Kristof T. Schütt
In this work, we extend the SchNet architecture by using weighted skip connections to assemble the final representation.