Abstract
We propose a distinguished set of positive and negative energy modes of the Klein-Gordon equation as a time-independent definition of the vacuum state of a quantized scalar field.
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Bel, L. (1999). How to Define a Unique Vacuum in Cosmology. In: Harvey, A. (eds) On Einstein’s Path. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-1422-9_6
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DOI: https://doi.org/10.1007/978-1-4612-1422-9_6
Publisher Name: Springer, New York, NY
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