Non-Abelian gauge theories, such as quantum chromodynamics (QCD) or electroweak theory, are best studied with the aid of Green's functions that are gauge-invariant off-shell, but unlike for the photon in quantum electrodynamics, conventional graphical constructions fail. The pinch technique provides a systematic framework for constructing such Green's functions, and has many useful applications. Beginning with elementary one-loop examples, this book goes on to extend the method to all orders, showing that the pinch technique is equivalent to calculations in the background field Feynman gauge. The Schwinger-Dyson equations are derived within the pinch technique framework, and are used to show how a dynamical gluon mass arises in QCD. Finally the volume turns to its many applications. This book is ideal for elementary particle theorists and graduate students. This 2011 title has been reissued as an Open Access publication on Cambridge Core.
John Cornwall Pořadí knih



- 2023
- 2020
Choice, Opportunity and Learning
- 270 stránek
- 10 hodin čtení
First published in 1996. This book is a collective exploration of choice and opportunity applied to the broad educational agenda, and then more specifically to practical teaching approaches, the learning environment and learning support. It traces the impact of developing services, attitudes and legislation of the education of children and young people who are physically disabled or who have medical conditions. Using elements of relevant research and by reviewing various methods and approaches, the book moves from the daily delivery of education through to issues of "inclusion" in schools, colleges and society.
- 2017
After Work, After Play, After All: A Political Memoir
- 242 stránek
- 9 hodin čtení
The narrative chronicles Dr. John Cornwall's extraordinary journey from his humble beginnings in Bendigo to becoming a significant reformer as a Labor Government Minister. It spans eight decades, highlighting his childhood, two decades of veterinary practice from the 1950s to the 1970s, and his influential role in the South Australian Government during the 1980s, showcasing his contributions to both the veterinary field and public service.