Eikonal method for calculation of coherence functions.
نویسندگان
چکیده
A method is presented for computing the cross-spectral density of a special class of partially coherent fields in which the coherent modes obey an eikonal equation. This method allows for statistical analysis of optical systems based on simple ray tracing.
منابع مشابه
Non-Singlet Partonic Splitting Functions
We develop a simplified method for obtaining higher orders in the perturbative expansion of the singular term A (αs) /[1−x]+ of non-singlet partonic splitting functions. Our method is based on the calculation of eikonal diagrams. The key point is the observation that the corresponding cross sections exponentiate in the case of two eikonal lines [1, 2, 3], and that the exponent is directly relat...
متن کاملتصحیح تقریب مرتبه اول بورن در برخورد یون-اتم در کانال تهییج توسط فرمولبندی آیکونال چند کاناله
In the present work has been tried to do a generalized formalism of semi-classical method used in ion-atom impact. One of the current method to calculation of the differential and total cross section for ion-atom impact at high energy range is the first Born approximation because of the simplicity of its calculations, but not necessarily sufficiently accurate. In particular this approximation i...
متن کاملPrestack first-break traveltime tomography using the double-square-root eikonal equation
Traveltime tomography with shot-based eikonal equation fixes shot positions then relies on inversion to resolve any contradicting information between independent shots and achieve a possible cost-function minimum. On the other hand, the double-square-root (DSR) eikonal equation that describes the whole survey, while providing the same first-arrival traveltimes, allows not only the receivers but...
متن کاملOptimal Control of Light Propagation Governed by Eikonal Equation within Inhomogeneous Media Using Computational Adjoint Approach
A mathematical model is presented in the present study to control the light propagation in an inhomogeneous media. The method is based on the identification of the optimal materials distribution in the media such that the trajectories of light rays follow the desired path. The problem is formulated as a distributed parameter identification problem and it is solved by a numerical met...
متن کاملStatus of Eikonal Two-Loop Calculations with Massive Quarks
The calculation of threshold corrections to hard scattering cross sections beyond leading logarithms requires the calculation of loop diagrams in the eikonal approximation [1]. One-loop calculations have been performed for all 2 → 2 partonic processes in heavy quark [2] and jet [3] production. The soft anomalous dimension matrix ΓS at one-loop allows the resummation of soft-gluon corrections at...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 95 4 شماره
صفحات -
تاریخ انتشار 2005