Particle creation and particle number in an expanding universe

I describe the logical basis of the method that I developed in 1962 and 1963 to define a quantum operator corresponding to the observable particle number of a quantized free scalar field in a spatially-flat isotropically expanding (and/or contracting) universe. This work also showed for the first ti...

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Veröffentlicht in:	Journal of physics. A, Mathematical and theoretical Mathematical and theoretical, 2012-09, Vol.45 (37), p.1-19
1. Verfasser:	Parker, Leonard
Format:	Artikel
Sprache:	eng
Schlagworte:	Adiabatic flow Invariance Mathematical analysis Operators Particles (of physics) Regularization Scalars Transformations Universe
Online-Zugang:	Volltext
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