Article
Computer Science, Interdisciplinary Applications
Andrey Grozin
Summary: A package for drawing publication-quality Feynman diagrams written in GLE is described. The package provides a set of subroutines in the GLE programming language for drawing Feynman diagrams, addressing the issue of general-purpose graphics programs being unsuitable for creating publication-quality graphics.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Astronomy & Astrophysics
M. J. Herrero, R. A. Morales
Summary: In this work, we present the calculation of one-loop electroweak radiative corrections to the scattering process WW -> HH within the framework of the Higgs Effective Field Theory. We use the renormalization of oneparticle-irreducible functions to compute the amplitude and derive the renormalized coefficients of the EChL relevant for this process. We also compare the results with the Standard Model case.
Article
Physics, Particles & Fields
Mathias Becker, Dominik Doering, Siddhartha Karmakar, Heinrich Paes
Summary: The study focuses on dark matter phenomenology in Standard Model extensions, specifically in the context of fermionic singlet dark matter coupling to leptons, quarks, or both, to explain the reported anomaly in the R-K observable. Large couplings between new particle content and the second lepton generation are used to address the R-K anomaly, which leads to a decrease in dark matter relic density. Direct detection experiments impose stringent bounds, even when the dark matter candidate only contributes a small fraction of the observed dark matter energy density.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Maria J. Herrero, Roberto A. Morales
Summary: This work presents a first full one-loop computation of vector boson scattering within the non-linear effective field theory and compares it with the Standard Model case. The calculation is performed using the diagrammatic method with one-particle-irreducible Green functions. The central part focuses on the renormalization of all n-legs one-loop 1PI Green functions involved, highlighting the importance of EChL coefficients for dealing with new divergences.
Article
Astronomy & Astrophysics
F. Arco, D. Domenech, M. J. Herrero, R. A. Morales
Summary: This work explores the low-energy effects induced by the integration of heavy Higgs boson modes within the two-Higgs-doublet model, focusing on the computation of nondecoupling effects and the capture of these effects through the Higgs effective field theory coefficients. The matching of amplitudes for physical processes involving the light Higgs boson is performed, and the implications of the resulting effective coefficients are discussed.
Article
Astronomy & Astrophysics
Luigi Del Debbio, Elizabeth Dobson, Andreas Juttner, Ben Kitching-Morley, Joseph K. L. Lee, Valentin Nourry, Antonin Portelli, Henrique Bergallo Rocha, Kostas Skenderis
Summary: A nonperturbative determination of the energy-momentum tensor is crucial in understanding strongly coupled systems. The Wilson flow method is utilized to renormalize the energy-momentum tensor for a three-dimensional massless scalar field with a phi(4) interaction in the adjoint of SU(N) on the lattice, including numerical results for the mixing coefficient in the N = 2 theory.
Article
Computer Science, Interdisciplinary Applications
G. Heinrich, S. Jahn, S. P. Jones, M. Kerner, F. Langer, V Magerya, A. Poldaru, J. Schlenk, E. Villa
Summary: We discuss the technique of expansion by regions and its implementation within pySecDec, a toolbox for evaluating dimensionally regulated parameter integrals. The program offers an automated way to perform asymptotic expansions and provides a new mechanism for efficiently evaluating amplitudes and individual integrals.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Computer Science, Interdisciplinary Applications
Jonas Klappert, Fabian Lange, Philipp Maierhoefer, Johann Usovitsch
Summary: The new version 2.0 of the Feynman integral reduction program Kira introduces new features such as reconstructing final coefficients, supporting user-provided systems of equations, and parallelization on computer clusters. Benchmark tests show significantly reduced main memory usage and improved performance compared to previous versions of Kira.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Antonio Baclig, Devi Ganapathi, Victoria Ng, Emily Penn, Jonathan Saathoff, William C. Chueh
Summary: Decreasing the melting point of mixtures is important in various applications. The traditional approach is to mix components with negative enthalpic interactions, while a complementary strategy is to mix components with neutral or slightly positive enthalpic interactions, using the number of components to increase the entropy of mixing. This approach can achieve a low melting point and has potential applications in high energy density flow battery electrolytes. The study investigates the eutectic composition of benzoquinone derivatives and demonstrates a large decrease in melting point by tuning the entropy of melting. The regular solution model shows better prediction accuracy for this type of mixture compared to the ideal solution model.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Computer Science, Interdisciplinary Applications
A. V. Smirnov, N. D. Shapurov, L. I. Vysotsky
Summary: This paper introduces a new version of the FIESTA program, FIESTA5, which improves the speed of Feynman integral evaluation through various enhancements. The new release includes two new integrators, Quasi Monte Carlo and Tensor Train, and the old code of FIESTA4 has been upgraded and mostly rewritten. It also offers several essential improvements for complex integrations, enabling the program to produce previously impossible results.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Computer Science, Interdisciplinary Applications
G. Heinrich, S. P. Jones, M. Kerner, V. Magerya, A. Olsson, J. Schlenk
Summary: We present a major update of the program pySECDEC, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals and amplitudes in a highly distributed and flexible way, optionally on GPUs, and runs up to an order of magnitude faster than the previous release. New integration procedures and functions for analyzing and introducing analytic regulators have been implemented.
COMPUTER PHYSICS COMMUNICATIONS
(2024)
Article
History & Philosophy Of Science
Robert Harlander
Summary: The passage discusses the transition from path integrals to Feynman diagrams, highlighting the decrease and subsequent increase in complexity. It illustrates the dialectic between the simplicity and clarity of Feynman diagrams, and the complexity in their practical applications.
Article
Astronomy & Astrophysics
Xiao Liu, Yan-Qing Ma
Summary: This article presents a key improvement in the auxiliary mass flow method, which can compute Feynman integrals encountered in cutting-edge collider processes. The authors have successfully applied this method to compute integrals crucial for precision frontier in collider physics. These results serve as important building blocks and benchmarks for future studies of these processes.
Article
Physics, Multidisciplinary
B. Ananthanarayan, Sumit Banik, Samuel Friot, Shayan Ghosh
Summary: Mellin-Barnes (MB) integrals are widely studied objects in mathematics and physics with various applications in different areas. A systematic computational technique for N-fold MB integrals had been lacking until a solution was proposed based on a simple geometrical analysis. This method can handle resonant and nonresonant cases, providing both convergent and diverging series representations depending on the integrand.
PHYSICAL REVIEW LETTERS
(2021)
Article
Computer Science, Interdisciplinary Applications
Hossam Elazab, B. D. E. McNiven, J. P. F. LeBlanc
Summary: libami is a lightweight implementation of algorithmic Matsubara integration (AMI) written in C++. It can analytically resolve the sequence of nested Matsubara integrals that arise in Feynman perturbative expansions in condensed matter systems. It provides a method to generate and store the analytic solution to temporal Matsubara sums, which is valid in any dimensionality, dispersion, and temperature.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
