☆ 4.7 Article

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs

COMPUTER PHYSICS COMMUNICATIONS (2014)

Journal

COMPUTER PHYSICS COMMUNICATIONS

Volume 185, Issue 2, Pages 560-571

Publisher

ELSEVIER

DOI: 10.1016/j.cpc.2013.10.020

Keywords

NLO computations; Monte Carlo programs; Collider physics; Automation; Les Houches Accord

Categories

Computer Science, Interdisciplinary Applications Physics, Mathematical

Funding

Science and Technology Facilities Council [ST/L000474/1, ST/J000485/1, ST/J000507/1, ST/L000458/1, ST/J000329/1, ST/G000522/1, ST/J000477/1] Funding Source: researchfish
STFC [ST/L000458/1, ST/J000485/1, ST/J000329/1, ST/L000474/1, ST/J000507/1, ST/J000477/1, ST/G000522/1] Funding Source: UKRI

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Abstract

We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements. (C) 2013 Elsevier B.V. All rights reserved.

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The Forward Physics Facility at the High-Luminosity LHC

Jonathan L. Feng, Felix Kling, Mary Hall Reno, Juan Rojo, Dennis Soldin, Luis A. Anchordoqui, Jamie Boyd, Ahmed Ismail, Lucian Harland-Lang, Kevin J. Kelly, Vishvas Pandey, Sebastian Trojanowski, Yu-Dai Tsai, Jean-Marco Alameddine, Takeshi Araki, Akitaka Ariga, Tomoko Ariga, Kento Asai, Alessandro Bacchetta, Kincso Balazs, Alan J. Barr, Michele Battistin, Jianming Bian, Caterina Bertone, Weidong Bai, Pouya Bakhti, A. Baha Balantekin, Basabendu Barman, Brian Batell, Martin Bauer, Brian Bauer, Mathias Becker, Asher Berlin, Enrico Bertuzzo, Atri Bhattacharya, Marco Bonvini, Stewart T. Boogert, Alexey Boyarsky, Joseph Bramante, Vedran Brdar, Adrian Carmona, David W. Casper, Francesco Giovanni Celiberto, Francesco Cerutti, Grigorios Chachamis, Garv Chauhan, Matthew Citron, Emanuele Copello, Jean-Pierre Corso, Luc Darme, Raffaele Tito D'Agnolo, Neda Darvishi, Arindam Das, Giovanni De Lellis, Albert De Roeck, Jordy de Vries, Hans P. Dembinski, Sergey Demidov, Patrick DeNiverville, Peter B. Denton, Frank F. Deppisch, P. S. Bhupal Dev, Antonia Di Crescenzo, Keith R. Dienes, Milind Diwan, Herbi K. Dreiner, Yong Du, Bhaskar Dutta, Pit Duwentaester, Lucie Elie, Sebastian A. R. Ellis, Rikard Enberg, Yasaman Farzan, Max Fieg, Ana Luisa Foguel, Patrick Foldenauer, Saeid Foroughi-Abari, Jean-Francois Fortin, Alexander Friedland, Elina Fuchs, Michael Fucilla, Kai Gallmeister, Alfonso Garcia, Carlos A. Garcia Canal, Maria Vittoria Garzelli, Rhorry Gauld, Sumit Ghosh, Anish Ghoshal, Stephen Gibson, Francesco Giuli, Victor P. Goncalves, Dmitry Gorbunov, Srubabati Goswami, Silvia Grau, Julian Y. Guenther, Marco Guzzi, Andrew Haas, Timo Hakulinen, Steven P. Harris, Julia Harz, Juan Carlos Helo Herrera, Christopher S. Hill, Martin Hirsch, Timothy J. Hobbs, Stefan Hoche, Andrzej Hryczuk, Fei Huang, Tomohiro Inada, Angelo Infantino, Ameen Ismail, Richard Jacobsson, Sudip Jana, Yu Seon Jeong, Yongsoo Jho, Dmitry Kalashnikov, Timo J. Karkkainen, Cynthia Keppel, Jongkuk Kim, Michael Klasen, Spencer R. Klein, Pyungwon Ko, Dominik Koehler, Masahiro Komatsu, Karol Kovarik, Suchita Kulkarni, Jason Kumar, Karan Kumar, Jui-Lin Kuo, Frank Krauss, Aleksander Kusina, Maxim Laletin, Chiara Le Roux, Seung J. Lee, Hye-Sung Lee, Helena Lefebvre, Jinmian Li, Shuailong Li, Yichen Li, Wei Liu, Zhen Liu, Mickael Lonjon, Kun-Feng Lyu, Rafal Maciula, Roshan Mammen Abraham, Mohammad R. Masouminia, Josh McFayden, Oleksii Mikulenko, Mohammed M. A. Mohammed, Kirtimaan A. Mohan, Jorge G. Morfin, Ulrich Mosel, Martin Mosny, Khoirul F. Muzakka, Pavel Nadolsky, Toshiyuki Nakano, Saurabh Nangia, Angel Navascues Cornago, Laurence J. Nevay, Pierre Ninin, Emanuele R. Nocera, Takaaki Nomura, Rui Nunes, Nobuchika Okada, Fred Olness, John Osborne, Hidetoshi Otono, Maksym Ovchynnikov, Alessandro Papa, Junle Pei, Guillermo Peon, Gilad Perez, Luke Pickering, Simon Plaetzer, Ryan Plestid, Tanmay Kumar Poddar, Pablo Quilez, Mudit Rai, Meshkat Rajaee, Digesh Raut, Peter Reimitz, Filippo Resnati, Wolfgang Rhode, Peter Richardson, Adam Ritz, Hiroki Rokujo, Leszek Roszkowski, Tim Ruhe, Richard Ruiz, Marta Sabate-Gilarte, Alexander Sandrock, Ina Sarcevic, Subir Sarkar, Osamu Sato, Christiane Scherb, Ingo Schienbein, Holger Schulz, Pedro Schwaller, Sergio J. Sciutto, Dipan Sengupta, Lesya Shchutska, Takashi Shimomura, Federico Silvetti, Kuver Sinha, Torbjorn Sjostrand, Jan T. Sobczyk, Huayang Song, Jorge F. Soriano, Yotam Soreq, Anna Stasto, David Stuart, Shufang Su, Wei Su, Antoni Szczurek, Zahra Tabrizi, Yosuke Takubo, Marco Taoso, Brooks Thomas, Pierre Thonet, Douglas Tuckler, Agustin Sabio Vera, Heinz Vincke, K. N. Vishnudath, Zeren Simon Wang, Martin W. Winkler, Wenjie Wu, Keping Xie, Xun-Jie Xu, Tevong You, Ji-Young Yu, Jiang-Hao Yu, Korinna Zapp, Yongchao Zhang, Yue Zhang, Guanghui Zhou, Renata Zukanovich Funchal

Summary: High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles beyond the acceptance of existing experiments. The proposed Forward Physics Facility (FPF) will host experiments to probe standard model processes and search for physics beyond the standard model (BSM). FPF experiments will explore BSM physics through searches for new particle scattering or decay signatures and deviations from SM expectations in a low-background environment.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2023)

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Article Astronomy & Astrophysics

Towards NNLO plus PS matching with sector showers

John M. Campbell, Stefan Hoche, Hai Tao Li, Christian T. Preuss, Peter Skands

Summary: We propose a new technique for fully-differential matching of final-state parton showers to NNLO calculations, focusing on the case of leptonic collisions with two final-state jets. The strategy is enabled by using the antenna formalism for NNLO antenna subtraction and the sector-antenna framework for the shower. Negative weights can be eliminated from the matching scheme as long as the combined real-virtual and double-real corrections do not overcompensate the real-emission term in the three-jet region. We describe the implementation of all necessary components in the VINCIA antenna shower in PyTHIA 8.3.

PHYSICS LETTERS B (2023)

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Article Multidisciplinary Sciences

Two-Real-Singlet-Model Benchmark Planes

Tania Robens

Summary: In this manuscript, I provide a brief review of the Benchmark Planes in the Two-Real-Singlet Model (TRSM), which enhances the scalar sector of the Standard Model (SM) by introducing two real singlets with Z(2)circle times Z'(2) symmetry. The model includes three CP-even neutral scalars that can interact with each other, where the interactions with SM-like particles are derived from mixing with the SM-like doublet. I discuss the previously proposed benchmark planes and explore the possibilities of production at future Higgs factories, as well as examine different regions in a more general scan of the model. Additionally, I investigate the use of the W-boson mass as a precision observable to determine allowed/excluded regions in the parameter space of the model. This work is an extension of a white paper submitted to the Snowmass process.

SYMMETRY-BASEL (2023)

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Article Physics, Particles & Fields

Multi-variable integration with a neural network

D. Maitre, R. Santos-Mateos

Summary: In this article, we propose a method for automatically integrating parametric integrals over the unit hypercube using a neural network. The method involves fitting a neural network to the primitive function of the integrand and minimizing the difference between the network's derivatives and the target function. We apply this method to two example integrals resulting from sector decomposition and achieve high accuracy and significant speed gains compared to traditional numerical integration methods.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Physics, Particles & Fields

Precision phenomenology with fiducial cross sections in the triple-differential Drell-Yan process

A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, A. Huss, C. T. Preuss, D. M. Walker

Summary: The production of lepton pairs at the LHC is measured to high precision, allowing for the extraction of triple-differential distributions in di-lepton mass, rapidity, and scattering angle. The measurements are performed within a specific phase space defined by cuts on lepton momenta and rapidities. This study investigates the phenomenology of the process based on perturbative predictions in QCD and electroweak theory, considering the interplay between measurement variables and fiducial cuts and the sensitivity to extra particle emissions and parton distributions. The results enable a precise determination of the weak mixing angle.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Physics, Particles & Fields

One-loop matrix element emulation with factorisation awareness

D. Maitre, H. Truong

Summary: In this article, we propose an emulation strategy for one-loop matrix elements based on factorisation properties and an extension of previous work. We demonstrate that even for complex processes with large multiplicities, we can achieve percent-level accuracy. The obtained point accuracy allows for significant augmentation of the training set size without additional evaluations of expensive one-loop matrix elements.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Physics, Particles & Fields

Matching and event-shape NNDL accuracy in parton showers

Keith Hamilton, Alexander Karlberg, Gavin P. P. Salam, Ludovic Scyboz, Rob Verheyen

Summary: This study examines the relationship between NLO matching and NLL parton showers, focusing on the simplest case of gamma* and Higgs-boson decays to qq and gg. The study finds that matching can enhance the shower to achieve NNDL accuracy for global event-shape observables and the two-jet rate. Various methods, including multiplicative matrix-element corrections and MC@NLO and POWHEG-style matching, are explored and shown to bring NNDL accuracy. The study combines analytic and numerical components and also considers some phenomenological aspects.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Physics, Particles & Fields

Complete NLO corrections to off-shell t(t)Z production at the LHC

Ansgar Denner, Daniele Lombardi, Giovanni Pelliccioli

Summary: This work presents NLO-accurate predictions for the production and decay of a top-antitop pair in association with a Z boson at the LHC, in the multi-lepton decay channel. The calculation is based on full matrix elements, considering resonant and non-resonant contributions, complete spin correlations and interference effects.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Astronomy & Astrophysics

NLO QCD corrections to polarized diboson production in semileptonic final states

Ansgar Denner, Christoph Haitz, Giovanni Pelliccioli

Summary: Understanding and predicting the polarization structure of multiboson processes at the LHC is becoming increasingly important for the upcoming run-3 and high-luminosity data. The CMS and ATLAS collaborations are using polarized predictions to analyze data and determine the polarization of W and Z bosons. This study focuses on computing NLO QCD corrections for the production and decay of WZ pairs in final states with two charged leptons and jets, providing necessary insights for modeling polarized diboson production in semileptonic decay channels.

PHYSICAL REVIEW D (2023)

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Article Physics, Particles & Fields

UFO 2.0: the 'Universal Feynman Output' format

Luc Darme, Celine Degrande, Claude Duhr, Benjamin Fuks, Mark Goodsell, Gudrun Heinrich, Valentin Hirschi, Stefan Hoche, Marius Hoefer, Joshua Isaacson, Olivier Mattelaer, Thorsten Ohl, Davide Pagani, Juergen Reuter, Peter Richardson, Steffen Schumann, Hua-Sheng Shao, Frank Siegert, Marco Zaro

Summary: This article presents an update and extension of the Universal FeynRules Output model format (UFO format), which is widely used in automated matrix-element generators and high-energy physics software. The newly proposed Universal Feynman Output format includes flexible and modular additions for particle decays, custom propagators, form factors, the renormalisation group running of parameters and masses, as well as higher-order quantum corrections.

EUROPEAN PHYSICAL JOURNAL C (2023)

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Article Physics, Particles & Fields

UFO 2.0: the ′Universal Feynman Output′ format

Luc Darme, Celine Degrande, Claude Duhr, Benjamin Fuks, Mark Goodsell, Gudrun Heinrich, Valentin Hirschi, Stefan Hoeche, Marius Hoefer, Joshua Isaacson, Olivier Mattelaer, Thorsten Ohl, Davide Pagani, Juergen Reuter, Peter Richardson, Steffen Schumann, Hua-Sheng Shao, Frank Siegert, Marco Zaro

Summary: This article presents an update of the Universal FeynRules Output model format, known as the UFO format, used by various automated matrix-element generators and high-energy physics software. It details different features proposed as extensions to the initial format in the past decade and collects them in the current second version of the model format, called the Universal Feynman Output format.

EUROPEAN PHYSICAL JOURNAL C (2023)

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Article Computer Science, Interdisciplinary Applications

Modeling and meshing for tokamak edge plasma simulations

Usman Riaz, E. Seegyoung Seol, Robert Hager, Mark S. Shephard

Summary: The accurate representation and effective discretization of a problem domain into a mesh are crucial for achieving high-quality simulation results and computational efficiency. This work presents recent developments in extending an automated tokamak modeling and meshing infrastructure to better support the near flux field following meshing requirements of the XGC Gyro-kinetic Code.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

Electron-phonon coupling from GW perturbation theory: Practical workflow combining BerkeleyGW, ABINIT, and EPW

Zhenglu Li, Gabriel Antonius, Yang-Hao Chan, Steven G. Louie

Summary: This article presents a workflow for practical calculations of electron-phonon coupling and includes the effect of many-electron correlations using GW perturbation theory. The workflow combines different software packages to enable accurate calculations at the level of quasiparticle band structures.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

MASAP: A package for atomic scattering amplitude in solids

Akihiro Koide, Sara Rabouli, Pierre Le Meur, Sylvain Tricot, Philippe Schieffer, Didier Sebilleau, Calogero R. Natoli

Summary: We present the MsSpec Atomic Scattering Amplitude Package (MASAP), which includes a computation program and a graphical interface for generating atomic scattering amplitude (ASA). The study investigates the applicability of plane wave (PW) and curved spherical wave (SW) scattering in describing electron propagation. The results show that the imaginary part of the optical potential enhances the elastic scattering in the forward direction but causes damping effects in other directions.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

A Bi-directional method for evaluating integrals involving higher transcendental functions. HyperRAF: A Julia package for new hyper-radial functions

A. Bagci, Gustavo A. Aucar

Summary: The electron repulsion integrals over Slater-type orbitals with non-integer principal quantum numbers are investigated in this study. These integrals are important in calculations of many-electron systems. New relationships free from hyper-geometric functions are derived to simplify the calculations. With the use of auxiliary functions and straightforward recurrence relationships, these integrals can be efficiently computed, providing initial conditions for the evaluation of expectation values and potentials.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

First-principles calculations of specular reflection of high-energy electrons during the two-dimensional crystal growth

Andrzej Daniluk

Summary: RHEED_DIFF_2D is an open-source software for qualitative numerical simulations of RHEED oscillation intensity changes with layer deposition, used for interpreting heteroepitaxial structures under different scattering crystal potential models.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

An incremental singular value decomposition approach for large-scale spatially parallel & distributed but temporally serial data - applied to technical flows ☆

Niklas Kuehl, Hendrik Fischer, Michael Hinze, Thomas Rung

Summary: The article presents a strategy and algorithm for simulation-accompanying, incremental Singular Value Decomposition (SVD) for time-evolving, spatially parallel discrete data sets. The proposed method improves computational efficiency by introducing a bunch matrix, resulting in higher accuracy and practical applicability.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

TRAVOLTA: GPU acceleration and algorithmic improvements for constructing quantum optimal control fields in photo-excited systems

Jose M. Rodriguez-Borbon, Xian Wang, Adrian P. Dieguez, Khaled Z. Ibrahim, Bryan M. Wong

Summary: This paper presents an open-source software package called TRAVOLTA for massively parallelized quantum optimal control calculations on GPUs. The TRAVOLTA package is an improvement on the previous NIC-CAGE algorithm and incorporates algorithmic improvements for faster convergence. Three different variants of GPU parallelization are examined to evaluate their performance in constructing optimal control fields in various quantum systems. The benchmarks show that the GPU-enhanced TRAVOLTA code produces the same results as previous CPU-based algorithms but with a speedup of more than ten times. The GPU enhancements and algorithmic improvements allow large quantum optimal control calculations to be efficiently executed on modern multi-core computational hardware.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

MCNOX: A code for computing and interpreting ultrafast nonlinear X-ray spectra of molecules at the multiconfigurational level

Weijie Hua

Summary: This work introduces a program called MCNOX for computing and analyzing ultrafast nonlinear X-ray spectra. It is designed for cutting-edge applications in photochemistry/photophysics enabled by X-ray free-electron lasers and high harmonic generation light sources. The program can calculate steady-state X-ray absorption spectroscopy and three types of ultrafast nonlinear X-ray spectra, and it is capable of identifying major electronic transitions and providing physical and chemical insights from complex signals.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

PLQ-sim: A computational tool for simulating photoluminescence quenching dynamics in organic donor/acceptor blends

Leandro Benatto, Omar Mesquita, Lucimara S. Roman, Rodrigo B. Capaz, Graziani Candiotto, Marlus Koehler

Summary: Photoluminescence Quenching Simulator (PLQ-Sim) is a user-friendly software for studying the dynamics of photoexcited states at the interface between organic semiconductors. It provides important information on organic photovoltaic and photothermal devices and calculates transfer rates and quenching efficiency.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

A method of calculating bandstructure in real-space with application to all-electron and full potential

Dongming Li, James Kestyn, Eric Polizzi

Summary: This study introduces a practical and efficient approach to calculate the all-electron full potential band structure in real space using a finite element basis. Instead of the k-space method, this method solves the Kohn-Sham equation self-consistently within a larger finite system enclosing the unit-cell. Non-self-consistent calculations are then performed in the Brillouin zone to obtain the band structure results, which are found to be in excellent agreement with the pseudopotential k-space method. Furthermore, the study successfully observes the band bending of core electrons.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

EUTERPE: A global gyrokinetic code for stellarator geometry

R. Kleiber, M. Borchardt, R. Hatzky, A. Koenies, H. Leyh, A. Mishchenko, J. Riemann, C. Slaby, J. M. Garcia-Regana, E. Sanchez, M. Cole

Summary: This paper describes the current state of the EUTERPE code, focusing on the implemented models and their numerical implementation. The code is capable of solving the multi-species electromagnetic gyrokinetic equations in a three-dimensional domain. It utilizes noise reduction techniques and grid resolution transformation for efficient computation. Additionally, various hybrid models are implemented for comparison and the study of plasma-particle interactions. The code is parallelized for high scalability on multiple CPUs.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

SMIwiz: An integrated toolbox for multidimensional seismic modelling and imaging

Pengliang Yang

Summary: This paper presents an open source software called SMIwiz, which combines seismic modelling, reverse time migration, and full waveform inversion into a unified computer implementation. SMIwiz supports both 2D and 3D simulations and provides various computational recipes for efficient calculation. Its independent processing and batchwise job scheduling ensure scalability, and its viability is demonstrated through applications on benchmark models.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

Generating and grading 34 optimised norm-conserving Vanderbilt pseudopotentials for actinides and super-heavy elements in the PseudoDojo

Christian Tantardini, Miroslav Ilias, Matteo Giantomassi, Alexander G. Kvashnin, Valeria Pershina, Xavier Gonze

Summary: Material discovery has been an active research field, and this study focuses on developing pseudopotentials for actinides and super-heavy elements. These pseudopotentials are crucial for accurate first-principles calculations and simulations.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

Generalisation of splitting methods based on modified potentials to nonlinear evolution equations of parabolic and Schrödinger type

S. Blanes, F. Casas, C. Gonzalez, M. Thalhammer

Summary: This paper explores the extension of modified potential operator splitting methods to specific classes of nonlinear evolution equations. Numerical experiments confirm the advantages of the proposed fourth-order modified operator splitting method over traditional splitting methods in dealing with Gross-Pitaevskii systems.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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Article Computer Science, Interdisciplinary Applications

Pole-fitting for complex functions: Enhancing standard techniques by artificial-neural-network classifiers and regressors *

Siegfried Kaidisch, Thomas U. Hilger, Andreas Krassnigg, Wolfgang Lucha

Summary: Motivated by a use case in theoretical hadron physics, this paper revisits an application of a pole-sum fit to dressing functions of a confined quark propagator. Specifically, it investigates approaches to determine the number and positions of singularities closest to the origin for a function known numerically on a specific grid on the positive real axis. Comparing the efficiency of standard techniques to a pure artificial-neural-network approach and a combination of both, it finds that the combined approach is more efficient. This approach can be applied to similar situations where the positions of poles need to be estimated quickly and reliably from real-axis information alone.

COMPUTER PHYSICS COMMUNICATIONS (2024)

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