Quantum Field Theory In Curved Spacetime: Quant... «Original ⟶»

Quantum Field Theory in Curved Spacetime: Quantized Fields and Semiclassical Gravity

To relate the perspectives of different observers or the state of fields at different times in an expanding universe, physicists use : Field Decomposition : A scalar field is expanded into a set of basis modes with creation and annihilation operators Quantum Field Theory in Curved Spacetime: Quant...

In flat (Minkowski) spacetime, Poincaré invariance provides a unique vacuum state and a global definition of "particles". In curved spacetime, these "crutches" disappear: Quantum Field Theory in Curved Spacetime: Quantized Fields