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Quantum gravity is among the most fascinating problems in physics. It modifies our understanding of time, space and matter. The recent development of the loop approach has allowed us to explore domains ranging from black hole thermodynamics to the early Universe. This book provides readers with a simple introduction to loop quantum gravity, centred on its covariant approach. It focuses on the physical and conceptual aspects of the problem and includes the background material needed to enter this lively domain of research, making it ideal for researchers and graduate students. Topics covered include quanta of space; classical and quantum physics without time; tetrad formalism; Holst action; lattice QCD; Regge calculus; ADM and Ashtekar variables; Ponzano-Regge and Turaev-Viro amplitudes; kinematics and dynamics of 4D Lorentzian quantum gravity; spectrum of area and volume; coherent states; classical limit; matter couplings; graviton propagator; spinfoam cosmology and black hole thermody

暢銷科普作家Carlo Rovelli回溯古希臘哲人阿那克西曼德的驚人思想——地球漂浮於虛空、萬物依自然律演化。這本書不只是科學史，更是一場關於懷疑、探索與知識進化的思辨之旅，啟發我們重新理解科學的靈魂。The bestselling author of Seven Brief Lessons on Physics illuminates the nature of science through the revolutionary ideas of the Greek philosopher Anaximander Over two millennia ago, the prescient insights of Anaximander paved the way for cosmology, physics, geography, meteorology, and biology, setting in motion a new way of seeing the world. His legacy includes the revolutionary ideas that the Earth floats in a void, that animals evolved, that the world can be understood in natural rather than supernatural terms, and that universal laws govern all phenomena. He introduced a new mode of rational thinking with an openness to uncertainty and the progress of knowledge. In this elegant work, the renowned theoretical physicist Carlo Rovelli brings to light the importance of Anaximander's overlooked influence on modern science. He examines Anaximander not from the point of view of a histori

A delightful intellectual feast from the bestselling author of Seven Brief Lessons on Physics and The Order of TimeOne of the world’s most prominent physicists and a fearless free spirit, Carlo Rovelli is also a masterful storyteller. His bestselling books have introduced millions of readers to the wonders of modern physics and his singular perspective on the cosmos. This new collection of essays reveals a curious intellect always on the move. Rovelli invites us on an accessible and enlightening voyage through science, literature, philosophy and politics.Written with his usual clarity and wit, this journey ranges widely across time and space: from Newton’s alchemy to Einstein’s mistakes, from Nabokov’s epidopterology to Dante’s cosmology, from mind-altering psychedelic substances to the meaning of atheism, from the future of physics to the power of uncertainty. Charming, pithy and elegant, this book is the perfect gateway to the universe of one of the most influential minds of our age.

In this short book, renowned theoretical physicist and author Carlo Rovelli gives a straightforward introduction to Einstein's General Relativity, our current theory of gravitation. Focusing on conceptual clarity, he derives all the basic results in the simplest way, taking care to explain the physical, philosophical and mathematical ideas at the heart of “the most beautiful of all scientific theories”. Some of the main applications of General Relativity are also explored, for example, black holes, gravitational waves and cosmology, and the book concludes with a brief introduction to quantum gravity. Written by an author well known for the clarity of his presentation of scientific ideas, this concise book will appeal to university students looking to improve their understanding of the principal concepts, as well as science-literate readers who are curious about the real theory of General Relativity, at a level beyond a popular science treatment.

In this short book, renowned theoretical physicist and author Carlo Rovelli gives a straightforward introduction to Einstein's General Relativity, our current theory of gravitation. Focusing on conceptual clarity, he derives all the basic results in the simplest way, taking care to explain the physical, philosophical and mathematical ideas at the heart of “the most beautiful of all scientific theories”. Some of the main applications of General Relativity are also explored, for example, black holes, gravitational waves and cosmology, and the book concludes with a brief introduction to quantum gravity. Written by an author well known for the clarity of his presentation of scientific ideas, this concise book will appeal to university students looking to improve their understanding of the principal concepts, as well as science-literate readers who are curious about the real theory of General Relativity, at a level beyond a popular science treatment.

One of the our most celebrated thinkers and the bestselling author of Seven Brief Lessons on Physics, Carlo Rovelli has entranced millions of readers with his singular perspective on the cosmos. In He

One of the most inspiring and counter-intuitive thinkers of our age, the bestselling author of Seven Brief Lessons on Physics, transforms the way we think about the world with his reflections on scien

From the bestselling author of Seven Brief Lessons on Physics, a concise, elegant exploration of time.Why do we remember the past and not the future? What does it mean for time to "flow"? Do we exist

Presents what you need to know about modern physics, the universe and our place in the world in seven lessons. In this introduction to modern physics, the author explains Einstein's theory of general

Instant New York Times Bestseller“Short and resonant. . . . The essays in Seven Brief Lessons on Physics arrive like shots of espresso.”—The New York Times“A startling and illustrative distillation of

Quantum gravity is perhaps the most important open problem in fundamental physics. It is the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this 2004 book, is one of the leading research programs in the field. The first part of the book discusses the reformulation of the basis of classical and quantum Hamiltonian physics required by general relativity. The second part covers the basic technical research directions. Appendices include a detailed history of the subject of quantum gravity, hard-to-find mathematical material, and a discussion of some philosophical issues raised by the subject. This fascinating text is ideal for graduate students entering the field, as well as researchers already working in quantum gravity. It will also appeal to philosophers and other scholars interested in the nature of space and time.

A concise, elegant exploration of time from the author of the international bestseller Seven Brief Lessons on PhysicsWhy do we remember the past and not the future? What does it mean for time to "flow

What are time and space made of? Where does matter come from? And what exactly is reality? From Aristotle to Albert Einstein, Michael Faraday to the Higgs boson, the author takes us on a journey to sh

Everything you need to know about modern physics, the universe and our place in the world in seven enlightening lessons 'Here, on the edge of what we know, in contact with the ocean of the unknown, sh