Perturbative matching of continuum and lattice quasi-distributions
نویسندگان
چکیده
منابع مشابه
Quasi-phase-matching and dispersion characterization of harmonic generation in the perturbative regime using counterpropagating beams.
It is shown theoretically that second harmonic generation can be quasi-phase-matched by using a pump beam consisting of a forward propagating field and a counterpropagating pulse train. The counterpropagating setup can also be used for direct measurement of the coherence length of the nonlinear process which can determine the dispersion properties of the medium.
متن کاملUniversal continuum limit of non-perturbative lattice non-singlet moment evolution
We present evidence for the universality of the continuum limit of the scale dependence of the renormalization constant associated with the operator corresponding to the average momentum of non-singlet parton densities. The evidence is provided by a non-perturbative computation in quenched lattice QCD using the Schrödinger Functional scheme. In particular, we show that the continuum limit is in...
متن کاملOne-loop matching of lattice and continuum heavy-light axial vector currents using NRQCD
The temporal component of the heavy-light axial vector current is constructed to one-loop order in perturbation theory and to order 1/M , where M is the heavy quark mass, in terms of operators suitable for use in lattice simulations of B and D mesons. The O(a)-improved clover action is used for the massless light quark, where a is the lattice spacing, and propagation of the heavy quark is descr...
متن کاملPerturbative calculation of quasi-normal modes
I discuss a systematic method of analytically calculating the asymptotic form of quasi-normal frequencies. In the case of a four-dimensional Schwarzschild black hole, I expand around the zeroth-order approximation to the wave equation proposed by Motl and Neitzke. In the case of a five-dimensional AdS black hole, I discuss a perturbative solution of the Heun equation. The analytical results are...
متن کاملLattice and continuum theories of Huang scattering
The predicted x-ray and neutron scattering by random semiconductor alloys A1−xBxC with the zinc-blende structure has been analysed using direct simulation of the scattering from the atoms in the lattice, and also using a continuum theory. This initial work focuses on the special case of the single-impurity limit (small concentration x) where the elastic properties of both of the pure crystals (...
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: EPJ Web of Conferences
سال: 2018
ISSN: 2100-014X
DOI: 10.1051/epjconf/201817506028