Quantum Cosmology
An Introduction
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Product details:
- Publisher Cambridge University Press
- Date of Publication 19 February 2026
- ISBN 9781009516808
- Binding Hardback
- No. of pages395 pages
- Size 250x175x28 mm
- Weight 850 g
- Language English 689
Categories
Short description:
A book covering the basics of quantum cosmology, a frontier area of theoretical physics, for graduate students and early-career researchers.
MoreLong description:
'Quantum Cosmology' offers a guided introduction to the quantum aspects of the cosmos. Starting with an overview of early universe cosmology, the book builds up to advanced topics such as the Wheeler-DeWitt equation, gravitational path integrals, and the no-boundary proposal for the wave function of the universe. Readers will explore tunneling processes via Coleman-DeLuccia instantons, the quantum origin of primordial fluctuations, the thermodynamics of horizons, and basic notions of string cosmology. Concepts such as wormholes and semi-classical geometry are introduced with clarity and physical motivation. The book assumes some familiarity with general relativity and quantum mechanics, but little prior knowledge of cosmology. It includes a wide range of exercises, with solutions provided. Written in a pedagogical style, it bridges the gap between undergraduate courses and the research level in this frontier area of theoretical physics.
'J.-L. Lehners's Quantum Cosmology provides an excellent review of both the well-established pillars and modern developments in the subject. It's perfectly organized and leads the reader from the basics to the forefront of research. Lehners explains a wide spectrum of complex topics, from the observational universe to the highly mathematical Picard-Lefschetz theory, in simple, accessible language. The useful exercises with solutions at the end of each chapter are a very good complement to the main text. In summary, this book is invaluable for scientists at every stage of their careers. Students will find it a perfect introduction to advanced topics, while young scientists can use it as a springboard to the forefront of quantum cosmology research. For senior scientists, it's an excellent way to quickly refresh their knowledge of complex subjects.' George Lavrelashvili, Tbilisi State University
Table of Contents:
Conventions and notation; 1. Modeling the early universe; 2. Blowing up the universe: inflation; 3. Observing perturbative quantum gravity: fluctuations; 4. Quantizing gravity: canonical approach; 5. Quantizing gravity: path integral approach; 6. Linking gravity, quantum theory, and thermodynamics; 7. Creating space and time: the no-boundary proposal; 8. Interpreting the wave function; 9. Transitioning to different spacetimes; 10. Going deeper yet: stringy cosmology; A. Constants of nature and cosmological quantities; B. Picard-Lefschetz theory and saddle point approximation; C. Useful functions; D. Exercise solutions; E. Guide to the bibliography; References; Index.
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