Zobrazeno 1 - 10
of 13 887
pro vyhledávání: '"Lattice qcd"'
Autor:
Xiao Luo, Yoshinobu Kuramashi
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-10 (2024)
Abstract We study the quantum phase transition of the (1+1)-dimensional O(3) nonlinear sigma model at finite density using the tensor renormalization group method. This model suffers from the sign problem, which has prevented us from investigating th
Externí odkaz:
https://doaj.org/article/2057b43211d541fba566ba79069d13e4
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-27 (2024)
Abstract Distribution amplitudes are functions of non-perturbative matrix elements describing the hadronization of quarks and gluons. Thanks to factorization theorems, they can be used to compute the scattering amplitude of high-energy processes. Rec
Externí odkaz:
https://doaj.org/article/9345146aaacf4f0bab36edae6578ea32
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-30 (2024)
Abstract In this paper we investigate the chiral magnetic effect (CME): the generation of an electric current due to a homogeneous background magnetic field and a homogeneous chiral imbalance in QCD. We demonstrate that the leading coefficient descri
Externí odkaz:
https://doaj.org/article/c18b146b3a3a4749bb2f4772056f73a9
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-26 (2024)
Abstract We simulate N f = 2 + 1 QCD at the physical point combining open and periodic boundary conditions in a parallel tempering framework, following the original proposal by M. Hasenbusch for 2d CP N−1 models, which has been recently implemented
Externí odkaz:
https://doaj.org/article/8d791bd4a9d34c4fbe682c9583d03cd2
Autor:
Alex Pomarol, Lindber Salas
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-20 (2024)
Abstract We consider conformal transitions arising from the merging of IR and UV fixed points, expected to occur in QCD with a large enough number of flavors. We study the smoothness of physical quantities across this transition, being mostly determi
Externí odkaz:
https://doaj.org/article/7dda903666d644d7944881b75464f653
Autor:
Hervé Dutrieux, Robert G. Edwards, Colin Egerer, Joseph Karpie, Christopher Monahan, Kostas Orginos, Anatoly Radyushkin, David Richards, Eloy Romero, Savvas Zafeiropoulos, on behalf of the HadStruc collaboration
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-60 (2024)
Abstract We present an exploration of the unpolarized isovector proton generalized parton distributions (GPDs) H u−d (x, ξ, t) and E u−d (x, ξ, t) in the pseudo-distribution formalism using distillation. Taking advantage of the large kinematic
Externí odkaz:
https://doaj.org/article/ba8cfa8538874671920da6b81a55e556
Autor:
A. Baião Raposo, M. T. Hansen
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-64 (2024)
Abstract The two-particle finite-volume scattering formalism derived by Lüscher and generalized in many subsequent works does not hold for energies far enough below the two-particle threshold to reach the nearest left-hand cut. The breakdown of the
Externí odkaz:
https://doaj.org/article/9ebd8d0d93684febab747325ead63dfc
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-17 (2024)
Abstract We propose two approaches for extracting the total gluon helicity contribution to proton spin from lattice QCD, one from local operator matrix elements in a fixed gauge accessible on lattice with feasible renormalization, and the other from
Externí odkaz:
https://doaj.org/article/99f8dce5fe1045fabf031d5ddb2dd99c
Autor:
Leonardo Chimirri, Patrick Fritzsch, Jochen Heitger, Fabian Joswig, Marco Panero, Carlos Pena, David Preti
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-42 (2024)
Abstract Hadronic matrix elements involving tensor currents play an important rôle in decays that allow to probe the consistency of the Standard Model via precision lattice QCD calculations. The non-singlet tensor current is a scale-dependent (anoma
Externí odkaz:
https://doaj.org/article/b0a84450e67c4e1bbaacb3c94281b407
Autor:
Ethan Baker, Dennis Bollweg, Peter Boyle, Ian Cloët, Xiang Gao, Swagato Mukherjee, Peter Petreczky, Rui Zhang, Yong Zhao
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-33 (2024)
Abstract We present a direct lattice QCD calculation of the x-dependence of the pion distribution amplitude (DA), which is performed using the quasi-DA in large momentum effective theory on a domain-wall fermion ensemble at physical quark masses and
Externí odkaz:
https://doaj.org/article/3a4471af60d145fc88f6e676f153a5ab