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Alternative Gravitational Theories

John W. Moffat

in The Shadow of the Black Hole

Published in print:
2020
Published Online:
June 2020
ISBN:
9780190650728
eISBN:
9780197517383
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190650728.003.0009
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

There have been many proposed modifications of gravitational theory, beginning with Einstein’s general relativity, modifying Newtonian gravity, and Weyl’s attempt at unifying gravity and ... More


Linearized Nonlocal Gravity

Bahram Mashhoon

in Nonlocal Gravity

Published in print:
2017
Published Online:
July 2017
ISBN:
9780198803805
eISBN:
9780191842313
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198803805.003.0007
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

The only known exact solution of the field equation of nonlocal gravity (NLG) is the trivial solution involving Minkowski spacetime that indicates the absence of a gravitational field. Therefore, ... More


Cosmological constant

Michael Kachelriess

in Quantum Fields: From the Hubble to the Planck Scale

Published in print:
2017
Published Online:
February 2018
ISBN:
9780198802877
eISBN:
9780191841330
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198802877.003.0026
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

The contribution of vacuum fluctuations to the cosmological constant is reconsidered studying the dependence on the used regularisation scheme. Then alternative explanations for the observed ... More


Covariant Physics: From Classical Mechanics to General Relativity and Beyond

Moataz H. Emam

Published in print:
2021
Published Online:
May 2021
ISBN:
9780198864899
eISBN:
9780191897313
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198864899.001.0001
Subject:
Physics, Condensed Matter Physics / Materials, Theoretical, Computational, and Statistical Physics

This book is an introduction to the modern methods of the general theory of relativity, tensor calculus, space time geometry, the classical theory of fields, and a variety of theoretical physics ... More


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