منابع مشابه
FLIC Overlap Fermions
The action of the overlap-Dirac operator on a vector is typically implemented indirectly through a multi-shift conjugate gradient solver. The compute-time required depends upon the condition number, κ, of the matrix that is used as the overlap kernel. While the Wilson action is typically used as the overlap kernel, the FLIC (Fat Link Irrelevant Clover) action has an improved condition number an...
متن کاملDynamical FLIC Fermions
The use of APE smearing or other blocking techniques in fermion actions can provide many advantages. There are many variants of these fat link actions in lattice QCD currently, such as FLIC fermions. The FLIC fermion formalism makes use of the APE blocking technique in combination with a projection of the blocked links back into the special unitary group. This reunitarisation is often performed...
متن کاملFLIC-Overlap Fermions and Topology
APE smearing the links in the irrelevant operators of clover fermions (Fat-Link Irrelevant Clover (FLIC) fermions) provides significant improvement in the condition number of the Hermitian-Dirac operator and gives rise to a factor of two savings in computing the overlap operator. This report investigates the effects of using a highly-improved definition of the lattice field-strength tensor Fμν ...
متن کاملFLIC Fermions and Hadron Phenomenology
A pedagogical overview of the formulation of the Fat Link Irrelevant Clover (FLIC) fermion action and its associated phenomenology is described. The scaling analysis indicates FLIC fermions provide a new form of nonperturbative O(a) improvement where near-continuum results are obtained at finite lattice spacing. Spin-1/2 and spin-3/2, even and odd parity baryon resonances are investigated in qu...
متن کاملExcited baryons from the FLIC fermion action
Masses of positive and negative parity excited nucleons and hyperons are calculated in quenched lattice QCD using an O(a) improved gluon action and a fat-link clover fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier N∗ simulations with improved actions, and exhibit a clear mass splitting between the nucleon and its pa...
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ژورنال
عنوان ژورنال: Acta Oncologica
سال: 2003
ISSN: 0284-186X,1651-226X
DOI: 10.1080/0891060310002212