Functional forms for lattice correlators at small times
نویسندگان
چکیده
منابع مشابه
Functional Forms for Lattice Correlators at Small Times
where M is the mass of the ground state, and Γ is channel dependent. The presence of the decaying exponential has led to investigations being focused on the large Euclidean time “tails” of the two-point functions, and data at small times being discarded. The question was asked, “Is there a way of obtaining information from short times?”. The answer was “Yes” a QCD Sum Rules approach. Lattice QC...
متن کاملPerturbative versus Lattice QCD Energy Density Correlators at High Temperatures†
Correlators of magnetic and electric field energy density are investigated for SU(Nc) gauge theory at high temperatures T . At separations z ≤ 2/T the correlators are shown to be dominated by a power–law behavior even for finite gluon screening masses. This continuum behavior is well approximated on current 4×163–lattices in the perturbative limit and leads to a considerable overestimate of scr...
متن کاملTemporal meson correlators at finite temperature on quenched anisotropic lattice ∗
We study charmonium correlators at finite temperature in quenched anisotropic lattice QCD. The smearing technique is applied to enhance the low energy part of the correlator. We use two analysis procedures: the maximum entropy method for extraction of the spectral function without assuming specific form, as an estimate of the shape of spectral function, and the χ fit assuming typical forms as q...
متن کاملStudy of Lattice Correlation Functions at Small Times using the QCD Sum Rules Continuum Model
In this paper we study the work of Leinweber by applying the Continuum Model of QCD Sum Rules (QCDSR) to the analysis of (quenched) lattice correlation functions. We expand upon his work in several areas: we study meson states as well as baryons; we analyse data from several lattice spacings; and we include data from the SheikholeslamiWohlert (clover) improved action. We find that the QCDSR Con...
متن کاملHeavy quark diffusion and lattice correlators
We study charmonia correlators at finite temperature. We analyze to what extent heavy quarkonia correlators are sensitive to the effect of heavy quark transport and whether it is possible to constrain the heavy quark diffusion constant by lattice calculations. Preliminary lattice calculations of quarkonia correlators performed on anisotropic lattices show that they are sensitive to the effect o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2002
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)01690-5