โ Scribed by L.H Ford
No coin nor oath required. For personal study only.
The limits of validity of the semiclassical theory in which gravity is unquantized are discussed. This is done by comparing the emission of classical gravitational waves in the semiclassical theory with graviton emission in quantum gravity theory. It is shown that these can be quite different even for macroscopic systems. Thus quantum gravitational effects can manifest themselves on a macroscopic scale. A hypothetical experiment to demonstrate the existence of gravitons by means of such effects is discussed.
๐ SIMILAR VOLUMES
An expression for the quadrupole moment of any two-body system with structure is derived from a "parallel axes" theorem. Within the weak-held limit of the theory of general relativity, expressions for the gravitational radiation flux of energy and angular momentum from two particles or two spherical
The two-point amplitude, AZ(kZ. k,), describing the scattering of the lowest string excitation (the tachyon) by a gravitational shock wave (GSW) is computed. For this purpose, we use the appropriate vertex operator in the GSW background. We explicitly evaluate Az(kz, k,) for large impact parameter