May 19th, 2020

лошадь, диаграмма, Фейнман

Задачи с решениями по эффективным теориям поля

Я от этого предельно далек, но кое-что тут даже мне может быть полезно (см. оглавление).

Solutions to Problems at Les Houches Summer School on EFT: https://arxiv.org/abs/2005.08573

This work details worked solutions to the various problems set by the lecturers during the course of the Les Houches summer school 2017 on effective field theories in particle physics and cosmology.
Comments: 92 pages, 14 figures; Contribution to the Proceedings of the 2017 Les Houches Summer School on Effective Field Theory in Particle Physics and Cosmology (Les Houches, France, July 3-28, 2017)
лошадь, диаграмма, Фейнман

О дифракции на полубесконечной пластине

Что-то предельно математизированное. но вдруг пригодится:

Time-dependent approach to the uniqueness of the Sommerfeld solution of the diffraction problem by a half-plane: https://arxiv.org/abs/1908.01663

A. Merzon, P. Zhevandrov, J.E. De la Paz Méndez, T.J. Villalba Vega
We consider the Sommerfeld problem of diffraction by an opaque half-plane with a real wavenumber
interpreting it as the limiting case, as time tends to infinity, of the corresponding time-dependent diffraction problem. We prove that the Sommerfeld formula for the solution is the limiting amplitude of the solution of this time-dependent problem which belongs to a certain functional class and is unique in it. For the proof of uniqueness of solution to the time-dependent problem we reduce it, after the Fourier-Laplace transform in t, to a stationary diffraction problem with a complex wavenumber. This permits us to use the proof of uniqueness in the Sobolev space H1. Thus we avoid imposing the radiation and regularity conditions on the edge from the beginning and instead obtain it in a natural way.
лошадь, диаграмма, Фейнман

Какие-то лекционные заметки по численным методам

Numerical Solution of the Boundary Value Problems for Partial Differential Equations. Crash course for holographer: https://arxiv.org/abs/1801.01483
Alexander Krikun
These are the notes for a series of Numerical Study group meetings, held in Lorentz institute in the fall of 2017. The aim of the notes is to provide a non-specialist with the minimal knowledge in numerical methods used in BVP for PDEs, necessary to solve the problems typically arising in applications of holography to condensed matter systems. A graduate level knowledge of Linear Algebra and theory of Differential Equations is assumed. Special attention is payed to the treatment of the boundary conditions of general form. The notes focus on the practical aspects of the implementation leaving aside the theory behind the methods in use. A few simple problems to test the acquired knowledge are included.
лошадь, диаграмма, Фейнман

Не помню, публиковал ли уже это, но пусть будет

Mechanics and special relativity: tutorial problems with solutions: https://arxiv.org/abs/1711.01670
Z.K. Silagadze
The manual contains (in Russian) solutions of 230 problems that were used by the author for a number of years at the tutorial seminars in the first year undergraduate course in Mechanics and special relativity at Novosibirsk State University. The manual consists of 36 chapters - according to the number of seminars in this course. In each chapter, from 5 to 10 problems are dealt with. Where possible, several solutions of the same problem are given in order the students to become used to treating physical phenomena from different points of view. Most problems are taken from the problem book Yu.I. Belchenko, E.A. Gilev, Z.K. Silagadze, V.G. Sokolov, Collection of problems in the mechanics of particles and bodies, Novosibirsk: NSU, 2000. For such problems, the corresponding number in the problem book is indicated in parentheses.
Comments: 260 pages, 174 figures, in Russian
лошадь, диаграмма, Фейнман

Ого, обзор по диагностике пучков на ЦЕРНовской школе дал Геро Кубе!

Все материалы школы я складываю в этом посте.

Beam Diagnostic Requirements: an Overview: https://arxiv.org/abs/2005.08389
Gero Kube
Beam diagnostics and instrumentation are an essential part of any kind of accelerator. There is a large variety of parameters to be measured for observation of particle beams with the precision required to tune, operate, and improve the machine. In the first part, the basic mechanisms of information transfer from the beam particles to the detector are described in order to derive suitable performance characteristics for the beam properties. However, depending on the type of accelerator, for the same parameter, the working principle of a monitor may strongly differ, and related to it also the requirements for accuracy. Therefore, in the second part, selected types of accelerators are described in order to illustrate specific diagnostics needs which must be taken into account before designing a related instrument.
Comments: 102 pages, contribution to the CAS - CERN Accelerator School: Beam Instrumentation, 2-15 June 2018, Tuusula, Finland