∃ a Good Book on Alternative Theories to SR and/or GR?

In summary: There is no good book that I could find that is exclusively about alternative theories of relativity. However, there are many books that discuss them in some way, such as Clifford Will's "Was Einstein Right?" or Assis's "Relational Mechanics or his 2014 update, Relational Mechanics and Implementation of Mach's Principle with Weber's Gravitational Force."
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What is a good book on alternative theories of Special and/or General Relativity?
 
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Geremia said:
What is a good book on alternative theories of Special and/or General Relativity?

Why do you want alternatives? These are two of the most accurate and best validated theories that we have.
 
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Geremia said:
What is a good book on alternative theories of Special and/or General Relativity?

I'm not aware of any good BOOKS on alternate theories but the Internet is full of crackpot sites that will give you plenty of them. It won't be actual science, but if alternate theories are what you are after, there will be plenty of them.
 
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phyzguy said:
Why do you want alternatives? These are two of the most accurate and best validated theories that we have.
How do I know that if I don't know the alternatives and whether they're less or more accurate than SR or GR?
 
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Geremia said:
How do I know that if I don't know the alternatives and whether they're less or more accurate than SR or GR?
That makes absolutely zero sense.
 
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I'm re-opening with this http://en.wikipedia.org/wiki/Alternatives_to_general_relativity

There are many alternatives to relativity that aren't crackpottery. Many of those alternatives are disproven however. It is allowed to discuss these theories, but only in an historic context since their validity has been disproven. Also, GR and SR are very successful and accurate theories, questioning their validity (in the cases its applicable) is not allowed. Thank you Micromass for this post.
 
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Geremia said:
How do I know that if I don't know the alternatives and whether they're less or more accurate than SR or GR?

Just to make sure you're clear, there are no alternatives that are more accurate than either of these theories. If there were, they would be adopted.
 
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There are also modern theories such as String Theory and Loop Quantum Gravity that aim to extend GR beyond it's domain of applicability. They don't compete with GR, but that might be what the OP is interested in.
 
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For special relativity, there are no serious competing or alternative theories nowadays, as far as I know. There do exist "test theories" that generalize SR by including tunable parameters. One set of parameter values produces SR. Other parameter values produce variations on SR. These theories are used to analyze experiments to determine how close their results agree with SR. That is, they are tools for testing the validity of SR in a quantitative way.

http://en.wikipedia.org/wiki/Test_theories_of_special_relativity

Some people misunderstand the purpose of these theories, and promote them as alternatives to SR.

Reference #4 on the Wikipedia page above is a book by Zhang that discusses this sort of thing in detail. (I've never seen the book itself, but I've read about it in discussions about SR)
 
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http://www.aapt.org/doorway/TGRUTalks/Weiss/WeissTalk1of9.htm
"GR is one of several possible covariant theories of gravity. It is only from observation and experiment that we conclude that GR is the valid theory."

An historically important alternative to GR was Nordstrom's theory of gravity, the first theory of gravity consistent with special relativity. It is not consistent with observation, because it predicts the wrong sign for the perihelion precession. Nordstrom's theory is formulated as a field in flat spacetime. Einstein and Fokker showed that Nordstrom's theory could be equivalently formulated as a curved spacetime theory. Later Einstein formulated GR, which is a different theory, but also based on curved spacetime, and which can be reformulated (under some conditions) as a field in flat spacetime.

Deviations from Lorentz invariance are discussed, including the use of alternative theories, by Mattingly http://relativity.livingreviews.org/Articles/lrr-2005-5/ [Broken] .

You can also see alternative theories to GR discussed in section 3.2 of http://relativity.livingreviews.org/Articles/lrr-2006-3/fulltext.html [Broken] .

Clifford Will has a good popular book "Was Einstein Right?".
 
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There seems to be ignorance here surrounding what an alternative theory to GR actually is. OP if you're interested, take a look at the end of chapter 4 of "Spacetime and Geometry"-Carroll and the references given therein.

You might also be interested in GR equivalent theories such as teleparallel gravity, in which case start here: http://arxiv.org/pdf/gr-qc/0011087v1.pdf

GR is to teleparallel gravity as Newton-Cartan theory is to standard Newtonian gravitation theory.
 
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Gauge Theory of Gravity

A major alternative to GA is the gauge theory of gravity as presented in

"Geometric Algebra for Physicts" by Doran and Lasenby

https://www.amazon.com/dp/0521715954/?tag=pfamazon01-20

This is a first order theory including spin (there are two gauge fields) and it is formulated on flat space time. All measurable predictions (so far) agree with GA. However, if the gauge theory of gravity there are no wormholes.
 
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1. What is the purpose of studying alternative theories to SR and GR?

The purpose of studying alternative theories to SR and GR is to expand our understanding of the fundamental concepts of physics, such as space, time, and gravity. By exploring different theories, we can gain new insights and potentially discover new ways to explain and predict physical phenomena.

2. How do alternative theories to SR and GR differ from the established theories?

Alternative theories to SR and GR often propose different mathematical frameworks and underlying assumptions about the nature of space and time. They may also offer alternative explanations for observed phenomena that challenge the principles of SR and GR.

3. What are some examples of alternative theories to SR and GR?

Some examples of alternative theories to SR and GR include loop quantum gravity, string theory, and modified Newtonian dynamics (MOND). Each of these theories offers a different perspective on how space, time, and gravity interact.

4. Are there any experimental evidence or observations that support alternative theories to SR and GR?

While there have been some experiments and observations that suggest deviations from the predictions of SR and GR, none have been conclusive enough to disprove these established theories. However, ongoing research and advancements in technology may provide more evidence in the future.

5. How can studying alternative theories to SR and GR benefit scientific progress?

Studying alternative theories to SR and GR can lead to new discoveries and advancements in our understanding of the universe. It also encourages critical thinking and promotes a healthy skepticism towards established theories, which can drive further innovation and progress in the field of physics.

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