The last decade has witnessed a breathtaking expansion of ideas concerning the origin and evolution of the universe. Researchers in cosmology thus need an unprecedented wide background in diverse areas of physics. Bridging the gap that has developed, Physics of the Early Universe explains the foundations of this subject. This postgraduate-/research-level volume covers cosmology, gauge theories, the standard model, cosmic strings, and supersymmetry.

This textbook provides advanced undergraduate and graduate students with a complete introduction to modern cosmology. It successfully bridges the gap between undergraduate and advanced graduate texts by discussing topics of current research, starting from first principles. Throughout this authoritative volume, emphasis is given to the simplest, most intuitive explanation for key equations used by researchers. The first third of the book carefully develops the necessary background in general relativity and quantum fields. The rest of the book then provides self-contained accounts of all the key topics in contemporary cosmology, including inflation, topological defects, gravitational lensing, galaxy formation, large-scale structure and the distance scale. To aid understanding, the book is well illustrated with helpful figures and includes outline solutions to more than ninety problems. All necessary astronomical jargon is clearly explained, ensuring the book is self-contained for any student with undergraduate physics.