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...
is a linear combination of both the old annihilation and creation operators: Quantum Field Theory in Curved Spacetime: Quantized Fields
: Strong gravitational fields near a black hole's event horizon polarize the vacuum, causing the black hole to emit thermal radiation and gradually lose mass. Quantum Field Theory in Curved Spacetime: Quant...