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kapoor 24/02/19

### Help-Page 7 ---- Main Buttons at the Top

Summary (or abstract) not available for this node.
kapoor 24/02/19

### Complex Variables --- Principles and Problem Sessions :: Top-Page

This section of the contents will have solutions to Problems in Part-II of the book

A. K. Kapoor, "Complex Variables --Principles and Problem Sessions"
World Scientific Publshers, Singpore (2011);
Low priced edition by Cambridge  University Press

Errata to the above book will also appear in this tree hierarchy.

kapoor 24/02/19

### Wonderful World of WWW :: Top-Page

Links to lot of interesting sites are given. At present it is all unclassified.

You can Expand/Collapse $$\rhd$$ Table of Contents at the top of the page

सकल पदारथ एहि जग माही, कर्महीन नर पावत नाही

kapoor 24/02/19

### Reommended Resources for Selected Topics :: Top-Page

Short articles describing selected resources of chosen topics will start appearing here.

kapoor 24/02/19

### Repository of Special Purpose Units (All Areas) :: Top-Page

Several special purpose units are planned. Currently available units are

1. Physics Lessons Units
2. Problem Solving Units
kapoor 24/02/19

### Documentation of $$~\LaTeX~$$ macros and special tricks :: Top-Page

In this section of pages I will document the macros that I have used for creation of content files uploaded.

kapoor 24/02/19

### Content Repositories :: Top-Page

Quick Help :: Navigation                                                $$\triangleright$$ Book: Table of Contents  (top line) can be expanded

In this tree hierarchy you will find will find repositories (all areas qm, cm, em...) of

Click to Expand /Collapse the $$\rhd$$Table of Contents

How to come to this Start-Page ? $$\rightarrow$$Type <<Start-Page  >> in the search box and hit <ENTER>

kapoor 24/02/19

### A list of complete reference to sources of questions and problems

This page gives an incomplete, but growing list of sources from which many problems have been compiled. Many questions and problems are obvious variations of the original one, an effort is made to list corresponding sources also. Needless to say that this task will never achieve a complete list, neverthelss it has been taken to give the credit where it is due.

The users are welcome to leave comments with  regard to source on the appropriate problem page.

kapoor 24/02/19

### Problem/QFT-15008, Neutral pion scattering ( Identical Particles)

Assuming $$\frac{g}{4!} \pi^4(x)$$ interaction for  neutral pions  of mass $$m$$, find

1.    transition probability per unit time per unit volume for $$\pi - \pi$$ scattering
2.   compute the total cross section for the scattering process and show that  $\frac{d\sigma}{d\Omega}= \frac{g^2}{64\pi^2 E_\text{cm}^2}$
Be careful about normalization of two identical pion states.
kapoor 24/02/19