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Foundations of space and time reflections on quantum gravity 1st Edition by Amanda Weltman, George Francis Rayner Ellis, Jeff Murugan ISBN 1671681711 9781671681712

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Foundations of space and time reflections on quantum gravity 1st Edition Weltman Digital Instant Download

Author(s): Weltman, Amanda; Ellis, George Francis Rayner; Murugan, Jeff (eds)
ISBN(s): 9781671681712, 1671681711
Edition: 1
File Details: PDF, 2.35 MB
Year: 2012
Language: english
SKU: EB-5430782 Category: Tags: , , , , ,

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ISBN 10: 1671681711 
ISBN 13: 9781671681712
Author: Amanda Weltman, George Francis Rayner Ellis, Jeff Murugan

After almost a century, the field of quantum gravity remains as difficult and inspiring as ever. Today, it finds itself a field divided, with two major contenders dominating: string theory, the leading exemplification of the covariant quantization program; and loop quantum gravity, the canonical scheme based on Dirac’s constrained Hamiltonian quantization. However, there are now a number of other innovative schemes providing promising new avenues. Encapsulating the latest debates on this topic, this book details the different approaches to understanding the very nature of space and time. It brings together leading researchers in each of these approaches to quantum gravity to explore these competing possibilities in an open way. Its comprehensive coverage explores all the current approaches to solving the problem of quantum gravity, addressing the strengths and weaknesses of each approach, to give researchers and graduate students an up-to-date view of the field.

Foundations of space and time reflections on quantum gravity 1st Table of contents:

Part I: The Problem of Quantum Gravity: Conceptual Foundations

  1. Introduction: Why Quantum Gravity?
    • The Incompatibility of General Relativity and Quantum Mechanics
    • The Need for a Unified Theory
    • Overview of the Conceptual Challenges
  2. General Relativity and the Nature of Spacetime
    • The Geometrical Description of Gravity
    • Spacetime as a Dynamic Entity
    • Singularities and the Big Bang/Black Holes
  3. Quantum Mechanics and the Nature of Reality
    • Superposition, Entanglement, and Non-Locality
    • Measurement Problem and Interpretations of Quantum Mechanics
    • Quantum Fields and Particles
  4. The Crisis at the Planck Scale
    • The Limits of Current Theories
    • The Emergence of Quantum Gravity Phenomena
    • What Happens to Spacetime at Extreme Scales?
  5. What is Quantum Gravity? Philosophical and Methodological Issues
    • Approaches to Theory Construction in Physics
    • The Role of Experiment vs. Theoretical Consistency
    • The Problem of Background Independence

Part II: Approaches to Quantum Gravity

  1. Loop Quantum Gravity (LQG)
    • Quantization of Geometry
    • Spin Networks and Spin Foams
    • Discrete Nature of Space and Time
    • Implications for Black Holes and Cosmology
  2. String Theory and M-Theory
    • Fundamental Constituents as Strings, Not Particles
    • Extra Dimensions and Branes
    • Unification of All Forces
    • Holographic Principle and AdS/CFT Correspondence
  3. Causal Set Theory
    • The Discreteness of Spacetime at a Fundamental Level
    • Order and Causality as Primary
    • The Emergence of Spacetime Manifold
  4. Noncommutative Geometry
    • Generalizing Spacetime to Noncommutative Algebras
    • Exploring Quantum Spacetime without a Metric
  5. Asymptotic Safety
    • The Concept of a Non-Trivial Fixed Point in the Renormalization Group Flow
    • A UV Complete Quantum Theory of Gravity
  6. Emergent Gravity and Entanglement Gravity
    • Gravity as an Emergent Phenomenon
    • The Connection Between Spacetime Geometry and Quantum Entanglement
  7. Other Approaches and Hybrid Models
    • Group Field Theory
    • Causal Dynamical Triangulations
    • Twistor Theory (if included)

Part III: Conceptual and Philosophical Implications

  1. The Nature of Time in Quantum Gravity
    • The Problem of Time in Canonical Quantum Gravity
    • Timelessness vs. Emergent Time
    • Relational Approaches to Time
  2. The Quantum Nature of Spacetime
    • What Does “Quantized Spacetime” Mean?
    • Beyond the Smooth Manifold
    • Non-Locality and the Structure of Events
  3. Black Holes and the Information Paradox
    • Hawking Radiation and Evaporation
    • The Fate of Information
    • Firewalls and the Black Hole Complementarity Principle
  4. Cosmology and the Beginning of the Universe
    • Quantum Gravity and the Big Bang Singularity
    • Inflationary Cosmology and its Quantum Origins
    • The Multiverse Concept
  5. Observational Prospects and Experimental Tests
    • The Extreme Difficulty of Direct Observation
    • Indirect Signatures and Astrophysical Tests
    • Gravitational Waves and Quantum Gravity Effects
  6. The Future of Physics and the Role of Philosophy
    • The Ongoing Dialogue Between Physics and Philosophy
    • The Limits of Scientific Knowledge
    • The Search for a Unified Understanding of Reality

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Tags: Amanda Weltman, George Francis Rayner Ellis, Jeff Murugan, Foundations, reflections