منابع مشابه
Twisted mass lattice QCD
I review the theoretical foundations, properties as well as the simulation results obtained so far of a variant of the Wilson lattice QCD formulation: Wilson twisted mass lattice QCD. Emphasis is put on the discretization errors and on the effects of these discretization errors on the phase structure for Wilson-like fermions in the chiral limit. The possibility to use in lattice simulations dif...
متن کاملTwisted mass Lattice QCD
In this contribution I review lattice formulations based on so-called twisted mass (tm) Wilson quarks, focusing on the general properties and problems that in my opinion are most relevant for on-going studies and applications to physics . The simplest of these formulations, which corresponds to QCD with one mass degenerate quark doublet, was introduced in ref. [1] as a way to get rid of the spu...
متن کاملDisconnected Loops with Twisted Mass Lattice QCD
We give a general introduction and discussion of the issues involved in using the twisted mass formulation of lattice fermions in the context of disconnected loop calculations, including a short orientation on the present experimental situation for nucleon strange quark form factors. A prototype calculation of the disconnected part of the nucleon scalar form factor is described. c Copyright own...
متن کاملO ( a ) improved twisted mass lattice QCD
Lattice QCD with Wilson quarks and a chirally twisted mass term (tmQCD) has been introduced in refs. [1,2]. We here apply Symanzik’s improvement programme to this theory and list the counterterms which arise at first order in the lattice spacing a. Based on the generalised transfer matrix, we define the tmQCD Schrödinger functional and use it to derive renormalized on-shell correlation function...
متن کاملReducing cutoff effects in maximally twisted lattice QCD close to the chiral limit
When analyzed in terms of the Symanzik expansion, the expectation values of multi-local (gauge-invariant) operators with non-trivial continuum limit exhibit in maximally twisted lattice QCD “infrared divergent” cutoff effects of the type a/(mπ) , 2k ≥ h ≥ 1 (k, h integers), which tend to become numerically large when the pion mass gets small. We prove that, if the critical mass counter-term is ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2001
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2001/10/041