Cosmology Beyond Einstein
(Sprache: Englisch)
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...
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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 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.
Inhaltsverzeichnis zu „Cosmology Beyond Einstein “
Introduction.- Gravity Beyond General Relativity.- Cosmological Stability of Massive Bigravity.- Linear Structure Growth in Massive Bigravity.- The Geometry of Doubly-Coupled Bigravity.- Cosmological Implications of Doubly-Coupled Massive Bigravity.- Cosmological Implications of Doubly-Coupled Massive Gravity.- Lorentz Violation During In ation.- Discussion and Conclusions.Autoren-Porträt von Adam Ross Solomon
Adam Solomon is a theoretical cosmologist interested in how we can unveil the fundamental laws of physics by looking to the sky. While his research has spanned a variety of cosmological observations and fundamental theories, he has focused especially on the mystery of the accelerating expansion of the Universe, and whether this may be a sign of new gravitational physics beyond Einstein's general relativity.He is currently a postdoctoral fellow at the Center for Particle Cosmology at the University of Pennsylvania, having obtained his bachelors at Yale University and his doctorate at the University of Cambridge.
Bibliographische Angaben
- Autor: Adam Ross Solomon
- 2018, Softcover reprint of the original 1st ed. 2017, XXI, 231 Seiten, 231 farbige Abbildungen, Maße: 15,7 x 23,6 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3319835491
- ISBN-13: 9783319835495
Sprache:
Englisch
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