Gravity category: 273 books

Analogue Gravity Phenomenology is a collection of contributions that cover a vast range of areas in physics, ranging from surface wave propagation in fluids to nonlinear optics. The underlying common aspect of all these topics, and hence the main focus and perspective from which they are explained...

This book takes a pedagogical approach to explaining quantum gravity, supersymmetry and string theory in a coherent way. It is aimed at graduate students and researchers in quantum field theory and high-energy physics. The first part of the book introduces quantum gravity, without requiring...

"UKRAY" - UNIFIED FIELD THEORY - - A New Unification Theory on Electromagnetic Gravitation- PREFACE    “This study which aims to prove that all forces and laws of physics exist in a single unified structure at the Starting and Ending moment of the Universe analyzes all...

When predictions of Einstein's theory of General Relativity are compared against observations of our Universe, a huge inconsistency is found. The most popular fix for this inconsistency is to "invent" around 94% of the content of the universe: dark matter and dark energy. The dark energy...

Why the force that keeps our feet on the ground holds the key to understanding the nature of time and the origin of the universe. Gravity is the weakest force in the everyday world yet it is the strongest force in the universe. It was the first force to be recognized and described yet it is...

Atomic clocks in circular motion above Earth are subject to special relativity, quantum mechanics and potential energy effects. General Relativity fails to distinguish between these different effects. To do this would require incorporating quantum mechanics, especially Bohr's second condition...

This work investigates the theoretical and cosmological implications of modifying Einstein's theory of general relativity. It explores two classes of modifications to gravity: those in which the graviton is given a small mass, and those in which Lorentz invariance is spontaneously broken. It elucidates...

This textbook introduces the current astrophysical observations of black holes, and discusses the leading techniques to study the strong gravity region around these objects with electromagnetic radiation. More importantly, it provides the basic tools for writing an astrophysical code and testing the...

“Gravity waves” have been accepted by many physicists, from Einstein on down, who see gravity as a change in the massless structure of space and time. However, Earth tides are not massless structures of space and time. Here, I look into the matter and find that, unlike oscillating electrons in...

Gravity is one of the four fundamental interactions that exist in nature. Understanding gravity is not only essential for understanding the motion of objects on Earth, but also the motion of all celestial objects, and even the expansion of the Universe itself. In this book George Gamow takes an enlightening...

Cosmology in Scalar-Tensor Gravity covers all aspects of cosmology in scalar-tensor theories of gravity. Considerable progress has been made in this exciting area of physics and this book is the first to provide a critical overview of the research. Among the topics treated are: -Scalar-tensor gravity...

Introduction The majority of present day physics theories were hypothetically formulated in the 17th, 18th and 19th centuries, while very few were formulated in the first four decades of the 20th century. In addition, data from advanced satellites, space telescopes and other space devices...

This book is a treatise on time and on background independence in physics. It first considers how time is conceived of in each accepted paradigm of physics: Newtonian, special relativity, quantum mechanics (QM) and general relativity (GR).  Substantial differences are moreover uncovered between what...

Aside from the obvious statement that it should be a theory capable of unifying general relativity and quantum field theory, not much is known about the true nature of quantum gravity. New ideas - and there are many of them for this is an exciting field of research - often diverge to a degree...