Relativistic corrections to the static potential at O(1/m) and O(1/m2)
نویسندگان
چکیده
We investigate the relativistic corrections to the static potential, i.e. the O(1/m) potential and the O(1/m2) velocity-dependent potentials, in SU(3) lattice gauge theory. They are important ingredients of potential nonrelativistic QCD for heavy quarkonium. Utilizing the multi-level algorithm, we obtain remarkably clean signals of these potentials up to r = 0.9 fm. We observe long range nonperturbative contributions to these corrections.
منابع مشابه
Determination of the relativistic corrections to the static inter-quark potential from lattice QCD
We investigate the relativistic corrections to the static potential, i.e. the O(1/m) potential and the O(1/m2) spin-dependent potentials, in SU(3) lattice gauge theory. Utilizing the multilevel algorithm, we obtain a very clean signal for these potentials in the region 0.25 fm . r . 1.2 fm. We confirm long-range nonperturbative contributions in the O(1/m) potential and O(1/m2) spinorbit potenti...
متن کاملComparison of the heavy-fermion and Foldy-Wouthuysen formalisms at third order
We compare two nonrelativistic (NR) reduction schemes (heavy-fermion and Foldy-Wouthuysen) that are used to derive low-energy effective-field-theory Lagrangians. We give the explicit transformation between the two types of fields to O(1/m2), derived from a quite general, relativistic Lagrangian. Beyond leading order the NR reductions always involve the smaller components of the Dirac spinors th...
متن کاملVariational Calculations for the Relativistic Interacting Fermion System at Finite Temperature: Application to Liquid 3He
In this paper, at first we have formulated the lowest order constrained variational method for the relativistic case of an interacting fermion system at finite temperature. Then we have used this formalism to calculate some thermodynamic properties of liquid in the relativistic regime. The results show that the difference between total energies of relativistic and non-relativistic cases of liqu...
متن کاملStatic and Dynamic Analysis of Bus Structure and Chassis of O-457
With due attention to the fact that the local and foreign vehicle industries are changing and modifying the previous designs in order to produce new designs, the components of self-propelled are to be differently analyzed. Static and dynamic analysis is one of them. In this paper, chassis and body of a o-457 bus were studied and analyzed under finite element method (using ANSYS).This process wa...
متن کاملNonperturbative determination of the QCD potential at O(1/m).
The relativistic correction to the QCD static interquark potential at O(1/m) is investigated nonperturbatively for the first time by using lattice Monte Carlo QCD simulations. The correction is found to be comparable with the Coulombic term of the static potential when applied to charmonium, and amounts to one-fourth of the Coulombic term for bottomonium.
متن کامل