models:general_relativity
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models:general_relativity [2019/01/16 15:19] jakobadmin [FAQ] |
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| - | -->Can we understand General Relativity as a gauge theory?# | ||
| - | <blockquote>"It is ironic that General Relativity (GR), although being historically the mother of all gauge theories, is the one whose gauge structure is the least understood. The question, "What is the gauge group of gravity?", has been raised innumerable times and has received a variety of answers that do not seem to be mutually exclusive. The Lorentz group, the Poincare group, the group of translations, and the deSitter group have all been proposed as gauge group for gravity. On the other hand, some physicists have always maintained that the gauge group of GR is the group of general coordinate transformations (or equivalently its active counter par, the group of diffeomorphisms of spacetime.) It has to be admitted that no fundamental new insight has emerged from these investigations. So the situation is quite discouraging. Yet, the question about the gauge group of gravity is not an idle one, for the attitude that we assume in this respect will determine the kind of questions that we are going to ask about the theory later." | ||
| - | <cite>[[http://cds.cern.ch/record/165379/?ln=de|Role of Soldering Gravity Theory]] by Roberto Percacci</cite></blockquote> | ||
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| - | <-- | ||
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| So what really took him so long was not finding the correct equations, but rather understanding why they work although they are generally covariant. | So what really took him so long was not finding the correct equations, but rather understanding why they work although they are generally covariant. | ||
| + | <-- | ||
| + | |||
| + | -->Can we understand General Relativity as a gauge theory?# | ||
| + | |||
| + | <blockquote>"It is ironic that General Relativity (GR), although being historically the mother of all gauge theories, is the one whose gauge structure is the least understood. The question, "What is the gauge group of gravity?", has been raised innumerable times and has received a variety of answers that do not seem to be mutually exclusive. The Lorentz group, the Poincare group, the group of translations, and the deSitter group have all been proposed as gauge group for gravity. On the other hand, some physicists have always maintained that the gauge group of GR is the group of general coordinate transformations (or equivalently its active counter par, the group of diffeomorphisms of spacetime.) It has to be admitted that no fundamental new insight has emerged from these investigations. So the situation is quite discouraging. Yet, the question about the gauge group of gravity is not an idle one, for the attitude that we assume in this respect will determine the kind of questions that we are going to ask about the theory later." | ||
| + | <cite>[[http://cds.cern.ch/record/165379/?ln=de|Role of Soldering Gravity Theory]] by Roberto Percacci</cite></blockquote> | ||
| + | |||
| <-- | <-- | ||
| <tabbox Interpretation> | <tabbox Interpretation> | ||
models/general_relativity.txt · Last modified: 2020/04/03 05:19 by 71.197.218.238
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