نتایج جستجو برای: fermion

تعداد نتایج: 13086  

1998
S. Esposito M. W. Evans E. Recami

The Dirac equation is solved for two novel terms which describe the interaction energy between the half integral spin of a fermion and the classical, circularly polarized, electromagnetic field. A simple experiment is suggested to test the new terms and the existence of radiation induced fermion resonance. ——————————– Recently, Warren et al. [1,2] have made the first attempt to detect radiation...

1999
Yoshio Kikukawa Tatsuya Noguchi

We derive the effective action of the light fermion field of the domain-wall fermion, which is referred as q(x) by Furman and Shamir. The inverse of the effective Dirac operator turns out to be identical to the inverse of the truncated overlap Dirac operator, except a local contact term which would give the chiral symmetry breaking in the Ginsparg-Wilson relation. This result allows us to relat...

1997
Jun Nishimura

We propose a method to formulate four-dimensionalN = 1 super Yang-Mills theory on the lattice without fine-tuning. We first show that a Weyl fermion in a real representation can be formulated using the domain wall approach with an addition of a Majorana mass term only for the unwanted mirror fermion. This formalism has manifest gauge invariance. The fermion number conservation is only violated ...

2004
Pavel Fileviez Pérez

It is well known, although sometimes ignored, that not only the d = 5 but also d = 6 proton decay depends on fermion mixings. In general we study carefully the dependence of d = 6 decay on fermion mixings using the effective operator approach. We find that without specifying a theory it is impossible to make clear predictions. Even in a given model, it is often not possible to determine all the...

1996
P. Q. Hung G. Isidori

We analyze the implications of a Higgs discovery on possible " new–physics " scenarios, for m H up to ∼ 700 GeV. For this purpose we critically review lower and upper limits on the Higgs mass in the SM and in the MSSM, respectively. Furthermore, we discuss the general features of possible " heavy " (m H > ∼ 2m Z) Higgs scenarios by means of a simple heavy–fermion condensate model.

2004
Fu-Kuo Chang Richard A. Scott

Expressions were presented which can be used to estimate the strengths of continuous fiber reinforced composite laminates containing pin-loaded holes. The expressions apply to laminates containing either a single pin loaded hole, a single row of pin loaded holes, or two parallel rows of pin loaded holes.

2008
Michael I. Buchoff

The graphene-inspired fermion actions recently proposed by Creutz and Boriçi have sparked interest in the use of non-orthogonal lattices in lattice QCD. These fermion actions have the desired chiral symmetry and have the minimal doubling required by the Nielsen-Ninomiya no-go theorem. However, due to the lack of discrete symmetries, radiative corrections in the gauged lattice theory will lead t...

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