Abstract
To conclude our introductory course on general relativity, in this final chapter we will briefly present the main theoretical problems that plague Einstein’s gravity as well as some attempts to solve them. The discussion will be necessarily at a very qualitative level, without details and far from being complete. A more accurate and complete study of these topics would be beyond the purposes of the present textbook.
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Notes
- 1.
An effective field theory is a field theory that provides reliable predictions in its realm of validity but it breaks down beyond it. The crucial point of the known effective field theories is the possibility of separating the physics at low energies from that at much higher energies. This permits us to make predictions at low energies without making unwarranted assumptions about what is going on at high energies.
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Problem
13.1
Get a rough estimate of the evaporation time of a Schwarzschild black hole of one Solar mass.
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Bambi, C. (2018). Beyond Einstein’s Gravity. In: Introduction to General Relativity. Undergraduate Lecture Notes in Physics. Springer, Singapore. https://doi.org/10.1007/978-981-13-1090-4_13
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DOI: https://doi.org/10.1007/978-981-13-1090-4_13
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