Abstract
The quantum theories of a scalar field interacting with external electromagnetic and gravitational fields respectively are compared. It is shown that several peculiar features, like the ambiguity of particle definition, thermal effects etc., which are thought to be special to quantum theory in curved spacetime, have analogues in the case of electromagnetism.
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Padmanabhan, T. Quantum theory in external electromagnetic and gravitational fields: A comparison of some conceptual issues. Pramana - J Phys 37, 179–233 (1991). https://doi.org/10.1007/BF02847477
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DOI: https://doi.org/10.1007/BF02847477
Keywords
- Quantum theory
- quantum gravity
- Rindler frame
- Hawking radiation
- pair creation
- expanding universe
- back reaction