Results 11 to 20 of about 269,748 (266)

Analytic expansions of multi-hadron finite-volume energies. I. Two-particle states

open access: yesJournal of High Energy Physics, 2022
We derive analytic expansions for the finite-volume energies of weakly-interacting two-particle systems, using the general relations between scattering amplitudes and energies derived by Lüscher and others.
D. M. Grabowska, M. T. Hansen
doaj   +1 more source

Three relativistic neutrons in a finite volume

open access: yesJournal of High Energy Physics, 2023
We generalize the relativistic field-theoretic (RFT) three-particle finite-volume formalism to systems of three identical, massive, spin-1/2 fermions, such as three neutrons.
Zachary T. Draper   +3 more
doaj   +1 more source

A Selective Review of Group Selection in High-Dimensional Models [PDF]

open access: yes, 2012
Grouping structures arise naturally in many statistical modeling problems. Several methods have been proposed for variable selection that respect grouping structure in variables.
Breheny, Patrick   +2 more
core   +2 more sources

Bounding the QCD Equation of State with the Lattice

open access: yesJournal of High Energy Physics, 2023
The equation of state of QCD matter at high densities is relevant for neutron star structure and for neutron star mergers and has been a focus of recent work.
Guy D. Moore, Tyler Gorda
doaj   +1 more source

Bootstrapping the gap in quantum spin systems

open access: yesJournal of High Energy Physics, 2023
In this work we report on a new bootstrap method for quantum mechanical problems that closely mirrors the setup from conformal field theory (CFT). We use the equations of motion to develop an analogue of the conformal block expansion for matrix elements ...
Colin Oscar Nancarrow, Yuan Xin
doaj   +1 more source

Machine learning challenges in theoretical HEP [PDF]

open access: yes, 2017
In these proceedings we perform a brief review of machine learning (ML) applications in theoretical High Energy Physics (HEP-TH). We start the discussion by defining and then classifying machine learning tasks in theoretical HEP.
Carrazza, Stefano
core   +2 more sources

Towards learning optimized kernels for complex Langevin

open access: yesJournal of High Energy Physics, 2023
We present a novel strategy aimed at restoring correct convergence in complex Langevin simulations. The central idea is to incorporate system-specific prior knowledge into the simulations, in order to circumvent the NP-hard sign problem.
Daniel Alvestad   +2 more
doaj   +1 more source

Combining Theoretical and Physical Laboratory Modelling in the Development of Real Time Control Algorithms

open access: yesWater Practice and Technology, 2009
Water industries worldwide are becoming increasingly interested, due to the recent improvements in the devices, methodologies and tools available, in the development and utilisation of Real Time Monitoring/Control (RT-M/C) applications. The University of Sheffield Pennine Water Group is currently researching the development of RT-M/C solutions for ...
A. J Saul, D. M Unwin
openaire   +1 more source

Critical endpoint of (3+1)-dimensional finite density ℤ3 gauge-Higgs model with tensor renormalization group

open access: yesJournal of High Energy Physics, 2023
The critical endpoint of the (3+1)-dimensional ℤ3 gauge-Higgs model at finite density is determined by the tensor renormalization group method. This work is an extension of the previous one on the ℤ2 model.
Shinichiro Akiyama, Yoshinobu Kuramashi
doaj   +1 more source

Backpropagating Hybrid Monte Carlo algorithm for fast Lefschetz thimble calculations

open access: yesJournal of High Energy Physics, 2022
The Picard-Lefschetz theory has been attracting much attention as a tool to evaluate a multi-variable integral with a complex weight, which appears in various important problems in theoretical physics.
Genki Fujisawa   +3 more
doaj   +1 more source

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