# Renormalisation in Quantum Field Theory

## TL;DR

This paper provides an introductory review of renormalisation techniques in quantum field theory, summarizing key concepts and historical developments for students and newcomers.

## Contribution

It offers a clear, lecture-based overview of renormalisation in quantum field theory, making complex ideas accessible for educational purposes.

## Key findings

- Clarifies the conceptual framework of renormalisation
- Summarizes historical and methodological developments
- Provides educational insights for students

## Abstract

An introductory review, based on a series of lectures delivered at the XXXI SERC School, Kalyani University, 9--18 January 2017.