Article
Physics, Multidisciplinary
N. Bethencourt de Leon, G. Chachamis, A. Sabio Vera
Summary: Multi-particle production studies have been a crucial tool in understanding the strong force for decades. With the advancements in hadron colliders, particularly the Large Hadron Collider (LHC), the focus has shifted towards studying multi-jet final states. This paper compares the predictions of the old phenomenological Chew-Pignotti model with the QCD-based BFKL model for multi-jet final states. The results show differences in single jet rapidity distributions and jet-jet rapidity correlations.
Article
Multidisciplinary Sciences
Oliver H. E. Philcox, Zachary Slepian
Summary: Efficient algorithms for computing the N-point correlation functions (NPCFs) of random fields in arbitrary D-dimensional homogeneous and isotropic spaces are presented. The estimators are expressed in a separable form by projecting the statistic onto a suitably defined angular basis, resulting in lower computational complexity. A Julia package implementing these estimators is provided, along with applications in cosmology and fluid dynamics.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Oceanography
Han Wang, Oliver Buhler
Summary: A new method for estimating second-order horizontal velocity structure functions is proposed, allowing for the decomposition of velocity field into rotational and divergent components. Anisotropic statistics in both the velocity field and Lagrangian data are permitted, without further assumptions. Testing against synthetic data and application to experimental datasets demonstrates the effectiveness of the new method, along with an improved statistical angle-weighting technique for better accuracy in the presence of anisotropy.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Astronomy & Astrophysics
E. Moffat, W. Melnitchouk, T. C. Rogers, N. Sato
Summary: The study performs a comprehensive Monte Carlo analysis of high-energy scattering data to determine parton distribution functions and parton to hadron fragmentation functions in the proton. By employing a new fitting strategy and parametrizations, the analysis evaluates the impact of different datasets on sea quark densities and confirms the suppression of the strange quark distribution previously observed. This new fit, referred to as JAM20-SIDIS, will allow for improved studies of parton correlation functions and the matching of collinear to TMD factorization descriptions across various processes.
Article
Astronomy & Astrophysics
Facundo Rodriguez, Manuel Merchan, M. Celeste Artale, Moira Andrews
Summary: Motivated by observational results, this study uses IllustrisTNG hydrodynamical numerical simulations to explore the alignment of central galaxies in groups with the surrounding structures. The results show that red central galaxies are more aligned with their groups compared to blue ones, and there is a strong dependence on the mass of the central galaxy. The alignment process is linked to halo assembly and the halo anisotropy-mass relationship.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Biochemical Research Methods
Giuseppe Cattaneo, Umberto Ferraro Petrillo, Raffaele Giancarlo, Francesco Palini, Chiara Romualdi
Summary: The study focused on a representative set of word-frequency-based AF functions, providing a comprehensive evaluation of their power and Type I error. Results offered novel and informative characterizations of these AF functions, aiding in the selection of functions suitable for analysis tasks.
Article
Physics, Multidisciplinary
Szilard Sajti
Summary: This paper discusses the application of off-specular scattering methods in the investigation of lateral inhomogeneities in single and multilayer systems, such as domain structures and rough interfaces. The domain-domain correlation functions were introduced, but some questions regarding them were left unanswered. This work aims to address these issues, which are crucial for fitting and interpreting experimental data effectively.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ruho Kondo
Summary: In this paper, a method for obtaining two-point direct correlation functions for desired two-dimensional lattices is proposed. The study successfully obtained DCFs for various known and nontrivial lattices through numerical experiments, demonstrating that these lattices can be simulated using a phase-field crystal with at least five modes.
Article
Engineering, Manufacturing
Patxi Fernandez-Zelaia, Yousub Lee, Quinn Campbell, Sebastien Dryepondt, Michael Kirka, Andres Marquez Rossy
Summary: In this paper, a novel method is proposed to estimate strains directly from dissimilar micrographs using a continuum mechanics approach, and a Bayesian framework is introduced to quantify uncertainty. The efficacy of this method is demonstrated on speckle pattern images from digital image correlation experiments and deformed synthetic binary microstructures. The method also proves to be effective on polycrystalline additively manufactured 316L deformed via tension.
INTEGRATING MATERIALS AND MANUFACTURING INNOVATION
(2022)
Article
Physics, Mathematical
Emily Bain
Summary: In this paper, we study the behavior of a two-periodic weighted dimer model on the Aztec diamond graph. We find that in the thermodynamic limit, the model exhibits a limit shape with frozen regions near corners, a flat "diamond" in the center with an ordered phase, and a disordered phase separating the diamond and the frozen phase. Additionally, we investigate the behavior of the height function in the mesoscopic scaling limit and compute the asymptotics of the inverse Kasteleyn matrix for vertices in a local neighborhood.
JOURNAL OF MATHEMATICAL PHYSICS
(2023)
Article
Astronomy & Astrophysics
Oliver H. E. Philcox, Zachary Slepian, Jiamin Hou, Craig Warner, Robert N. Cahn, Daniel J. Eisenstein
Summary: The new algorithm efficiently computes N-point correlation functions of a 3D density field for arbitrary N, applicable to both discrete spectroscopic galaxy surveys and continuous fields. By estimating NPCFs through counting pairs of particles in space, the algorithm has low complexity for N-g particles and scales linearly.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Oliver H. E. Philcox, Zachary Slepian
Summary: This study proposes practical algorithms for computing the power spectrum and 2PCF multipoles using pairwise lines of sight, adopting the galaxy midpoint or angle bisector definitions. The accuracy of these estimators can reach arbitrary order, producing comparable results to conventional methods with only modest additional computational cost in practice.
Article
Mathematics, Applied
Inga Kottlarz, Ulrich Parlitz
Summary: The ordinal pattern-based complexity-entropy plane is a popular tool for distinguishing stochastic signals from deterministic chaos. However, its performance has been mainly demonstrated for low-dimensional systems. To evaluate its usefulness for high-dimensional chaotic data, we applied this method to various types of time series. We found that both high-dimensional deterministic data and stochastic surrogate data can occupy the same region on the complexity-entropy plane, making classification challenging. Surrogate data tests based on entropy and complexity provide more significant results.
Article
Biochemical Research Methods
Maria Dermit, Trenton M. Peters-Clarke, Evgenia Shishkova, Jesse G. Meyer
Summary: PeCorA is a strategy for detecting quantitative disagreements between peptides in shotgun proteomics, providing important insights in protein quantitation studies. It can identify regulated post-translational modifications or poorly quantified peptides, improving the accuracy of protein quantitation. By using PeCorA, potential anomalies in the proteome can be uncovered, leading to more reliable results in protein quantity analysis.
JOURNAL OF PROTEOME RESEARCH
(2021)
Article
Geochemistry & Geophysics
Francois Bonneau, Dietrich Stoyan
Summary: This paper proposes a second-order statistical theory to characterize the inner variability of fracture networks in 2D. The theory utilizes marked point process theory to treat fracture barycenters as points and fracture lengths and orientations as marks. It employs pair-correlation and mark-correlation functions to describe fracture network variability based on oriented distances between object centers. The application of these ideas on three fracture networks demonstrates their effectiveness.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Review
Physics, Multidisciplinary
Zohreh Davoudi, William Detmold, Phiala Shanahan, Kostas Orginos, Assumpta Parreno, Martin J. Savage, Michael L. Wagman
Summary: In the past decade, numerical solutions of Quantum Chromodynamics (QCD) using lattice QCD techniques have advanced to the point of connecting fundamental aspects of nuclear physics with the underlying degrees of freedom of the Standard Model. Lattice QCD calculations of nuclear matrix elements offer guidance for low energy nuclear reactions in astrophysics, dark matter direct detection experiments, and experimental searches for violations of the symmetries of the Standard Model.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Silas R. Beane, Roland C. Farrell
Summary: The formulation of nucleon-nucleon scattering presented in the study uses the S-matrix as the fundamental object, moving between RG fixed points in theory space defined by unitarity. The trajectories on a flat torus represent special geodesics with vanishing entanglement, while entanglement is influenced by external potential. The system of equations describing S-matrix trajectories is complex, but low-energy S-matrix exhibits UV/IR conformal invariance, making the equations integrable and determining the potential.
Article
Physics, Nuclear
Silas R. Beane, Roland C. Farrell, Mira Varma
Summary: Recent research has investigated the conjecture of minimal entanglement in low-energy hadronic scattering processes, specifically focusing on processes involving pions and nucleons. The study constructed the entanglement power of the S-matrix for the pi pi and pi N systems and discussed the implications of minimizing entanglement, comparing the findings with expectations from large-Nc QCD.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2021)
Article
Physics, Multidisciplinary
Silas R. Beane, Roland C. Farrell
Summary: This paper investigates the scattering matrix that describes the low-energy, non-relativistic scattering of spin-1/2 fermions interacting via finite-range potentials. The constraints on scattering trajectories and the effect of spatial dimensionality are explored using a geometric action principle.
Article
Physics, Multidisciplinary
Silas R. Beane, Roland C. Farrell
Summary: This study discovers UV/IR symmetries in the s-wave nucleon-nucleon scattering matrix, which provide an interpretation for phase shift features. The findings are significant for pionless EFT expansions and offer insights into novel expansion methods.
Article
Physics, Nuclear
Silas R. Beane, Roland C. Farrell
Summary: The low energy S-matrix, which describes non-relativistic scattering due to finite-range forces, possesses UV/IR symmetries that are hidden in the corresponding effective field theory (EFT) action. This study demonstrates that the S-matrix symmetries manifest as geometric symmetries of the RG flow of coupling constants in both three and two spatial dimensions in the EFT action. An example is provided to illustrate that UV/IR symmetry breaking in the S-matrix imposes strong constraints on the RG flow of the coefficients of the symmetry-breaking operators in the EFT.
Article
Astronomy & Astrophysics
Saman Amarasinghe, Riyadh Baghdadi, Zohreh Davoudi, William Detmold, Marc Illa, Assumpta Parreno, Andrew V. Pochinsky, Phiala E. Shanahan, Michael L. Wagman
Summary: The low-energy spectrum and scattering of two-nucleon systems have been investigated using lattice quantum chromodynamics and a variational approach. Various types of interpolating operators, including dibaryon operators, hexaquark operators, and quasilocal operators, were utilized. By employing sparsening techniques, correlation function matrices were formed from the quark propagators obtained from the operators. Variational methods were applied to constrain the low-energy spectra of two-nucleon systems in a finite volume. The study reveals the dependence of energy spectra on interpolating operators and highlights the strengths and weaknesses of variational methods.
Article
Optics
Silas R. Beane, Gianluca Bertaina, Roland C. Farrell, William R. Marshall
Summary: We study the ultracold and weakly coupled Fermi gas in two spatial dimensions using an effective field theory framework. It is found that the universal corrections to the energy density at two orders of interaction strength do not agree with Monte Carlo simulations in the weak-coupling regime. We obtain universal corrections to three orders of interaction strength, which provide agreement between theory and simulation. We also consider the scale ambiguity associated with the renormalization of singular contact interactions, and calculate nonuniversal contributions to the energy density.
Article
Computer Science, Interdisciplinary Applications
Travis Whyte, Andreas Stathopoulos, Eloy Romero, Kostas Orginos
Summary: The calculation of disconnected diagram contributions in Lattice QCD is computationally expensive. This article presents a sampling and interpolation scheme that can predict the variances associated with Frequency Splitting under displacements of the lattice, and selects shifts that minimize the cost for trace estimation.
COMPUTER PHYSICS COMMUNICATIONS
(2024)
Article
Astronomy & Astrophysics
P. C. Barry, C. Egerer, J. Karpie, W. Melnitchouk, C. Monahan, K. Orginos, D. Richards, Jian-Wei Qiu, N. Sato, R. S. Sufian, S. Zafeiropoulos
Summary: In this study, pion parton distribution functions were extracted through a Monte Carlo global QCD analysis of experimental data and lattice QCD data. The reduced Ioffe time pseudo-distributions significantly decreased the uncertainties on the PDFs, while the current-current correlators were limited by systematic effects associated with the lattice.
Article
Astronomy & Astrophysics
William Detmold, Anthony Grebe, Issaku Kanamori, C-J David Lin, Santanu Mondal, Robert J. Perry, Yong Zhao
Summary: In this article, the heavy-quark operator product expansion method is numerically implemented for the first time to determine the second Mellin moment of the pion LCDA. The resulting value, obtained at a pion mass of 550 MeV and a factorization scale of 2 GeV in quenched QCD, is 0.210 +/- 0.013(stat) +/- 0.034(sys), which is compatible with previous determinations of this quantity.
Article
Astronomy & Astrophysics
William Detmold, Anthony Grebe, Issaku Kanamori, C-J David Lin, Robert J. Perry, Yong Zhao
Summary: This paper presents theoretical details for calculating PDFs and LCDAs using a heavy-quark operator product expansion method, showing that the operator product expansion can be expressed as the convolution of a perturbative matching kernel and the corresponding light cone distribution. It also provides the one-loop Wilson coefficients for the PDFs and LCDAs, with the coefficients for the LCDAs being new.
Article
Astronomy & Astrophysics
Marc Illa, Silas R. Beane, Emmanuel Chang, Zohreh Davoudi, William Detmold, David J. Murphy, Kostas Orginos, Assumpta Parreno, Martin J. Savage, Phiala E. Shanahan, Michael L. Wagman, Frank Winter
Summary: In this study, interactions between two octet baryons at low energies were investigated using LQCD with larger-than-physical quark masses. The results showed that most systems were bound at this pion mass, except for the repulsive interactions in the spin-triplet Sigma N and Xi Xi channels. Extrapolation of binding energies to the physical point was performed, and constraints on low-energy coefficients in pionless EFT relevant for two-baryon interactions were determined.
Article
Astronomy & Astrophysics
Assumpta Parreno, Phiala E. Shanahan, Michael L. Wagman, Frank Winter, Emmanuel Chang, William Detmold, Marc Illa
Summary: This study investigates the axial charge of the triton using lattice QCD, finding a compact bound state with the quantum numbers of the triton at specific quark masses, and a triton to proton axial charge ratio of 0.91. Results from correlation functions calculations and FVEFT extrapolation show that QCD can explain the modification to the triton's axial charge.
