Cosmology Beyond Einstein

  • Adam Ross┬áSolomon

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xxi
  2. Adam Ross Solomon
    Pages 1-20
  3. Adam Ross Solomon
    Pages 21-51
  4. A Massive Graviton

    1. Front Matter
      Pages 53-53
    2. Adam Ross Solomon
      Pages 55-70
    3. Adam Ross Solomon
      Pages 71-101
    4. Adam Ross Solomon
      Pages 103-115
  5. Lorentz Violation

    1. Front Matter
      Pages 153-153
    2. Adam Ross Solomon
      Pages 155-195
    3. Adam Ross Solomon
      Pages 197-206
  6. Back Matter
    Pages 207-231

About this book


This thesis 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 the nature of cosmological perturbations in theories of massive bimetric gravity, including a potentially deadly instability. Theories of gravity beyond general relativity could explain why the expansion of the Universe is accelerating, obviating the need for a dark energy, and can also affect the evolution of the early Universe. Next, it investigates the nature of spacetime in massive gravity theories that contain two different spacetime metrics. Lastly, the strongest constraints to date are placed on the size of Lorentz-violating effects in the gravity sector during inflation.


Massive Gravity Bimetric Gravity Massive Bigravity Modified Gravity Einstein-Aether Theory Lorentz Violation Cosmological Perturbation Theory Dark Energy Cosmological Inflation Theoretical Cosmology

Authors and affiliations

  • Adam Ross┬áSolomon
    • 1
  1. 1.Center for Particle CosmologyUniversity of PennsylvaniaPhiladelphiaUSA

Bibliographic information