Results 21 to 30 of about 164,015 (303)

Nucleon axial charge from quenched lattice QCD with domain wall fermions [PDF]

open access: yes, 2003
We present a quenched lattice calculation of the nucleon isovector vector and axial-vector charges gV and gA. The chiral symmetry of domain wall fermions makes the calculation of the nucleon axial charge particularly easy since the Ward-Takahashi ...
A. Ali Khan   +36 more
core   +1 more source

A New Look at the Axial Anomaly in Lattice QED with Wilson Fermions [PDF]

open access: yes, 1998
By carrying out a systematic expansion of Feynman integrals in the lattice spacing, we show that the axial anomaly in the U(1) lattice gauge theory with Wilson fermions, as determined in one-loop order from an irrelevant lattice operator in the Ward ...
E. Seiler   +15 more
core   +2 more sources

Mechanical behaviour of rammed earth column: A comparison between unreinforced, steel and bamboo reinforced columns

open access: yesMateriales de Construccion, 2018
This paper presents an experimental study on the behavior of cement stabilized rammed earth (CSRE) column reinforced with steel under axial loading and its comparison with unreinforced and bamboo reinforced columns.
D. D. Tripura, K. D. Singh
doaj   +1 more source

Numerical study on pile group efficiency for piles embedded in cohesive and cohesionless soils [PDF]

open access: yesE3S Web of Conferences, 2023
This paper aims to study the efficiency of pile groups with various numbers of piles and pile spacing. Axial loading tests on pile groups and also single piles were simulated using a three-dimensional finite element program to obtain the load-settlement ...
Pratama Ignatius Tommy   +2 more
doaj   +1 more source

Chiral symmetry and O(a) improvement in lattice QCD [PDF]

open access: yes, 1996
The dominant cutoff effects in lattice QCD with Wilson quarks are proportional to the lattice spacing a. In particular, the isovector axial current satisfies the PCAC relation only up to such effects.
Luescher, Martin   +3 more
core   +2 more sources

Flow field characteristic of water jet with air ring protective layer under submerged environment and the orthogonal optimization of nozzle structure

open access: yesEnergy Science & Engineering, 2023
A water jet with an air ring protective layer is a promising rock‐breaking and cutting rate improvement method in submerged environment, such as oil–gas drilling. The jet flow field characteristic determines the jet impinge performance and is affected by
Liang Zhang   +5 more
doaj   +1 more source

Chiral Lattice Fermions, Minimal Doubling, and the Axial Anomaly

open access: yes, 2010
Exact chiral symmetry at finite lattice spacing would preclude the axial anomaly. In order to describe a continuum quantum field theory of Dirac fermions, lattice actions with purported exact chiral symmetry must break the flavor-singlet axial symmetry ...
Tiburzi, Brian C.
core   +1 more source

Going chiral: overlap versus twisted mass fermions [PDF]

open access: yes, 2004
We compare the behavior of overlap fermions, which are chirally invariant, and of Wilson twisted mass fermions at full twist in the approach to the chiral limit.
  +39 more
core   +2 more sources

Chiral Symmetry Breaking for Domain Wall Fermions in Quenched Lattice QCD [PDF]

open access: yes, 2000
The domain wall fermion formulation exhibits full chiral symmetry for finite lattice spacing except for the effects of mixing between the domain walls. Close to the continuum limit these symmetry breaking effects should be described by a single residual ...
Aoki   +5 more
core   +2 more sources

Optimized Propeller-PBCF Spacing for Enhanced Ship Propulsion Efficiency

open access: yesJournal of Eta Maritime Science
Ship propulsion efficiency plays a crucial role in reducing fuel consumption and greenhouse gas emissions in the maritime industry. While Propeller Boss Cap Fins (PBCFs) are widely adopted to suppress hub vortices and enhance wake flow, the influence of ...
Mohamad Yamin   +3 more
doaj   +1 more source

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