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Homoclinics for Lagrangian systems on Riemannian manifolds
(Dynamic Publishers Atlanta, 1992) 
On the motion of test particles in a fluctuating gravitational field
(AMER INST PHYSICS, 1992)In this paper the "free fall" motion of a test tetrad in a weak gravitational field is studied. This is done with the intention of exploring the geometry locally through geodesics and parallel transport. By use of the ... 
The propagator in the radial gauge
(AMER INST PHYSICS, 1992)The solutions of the equation for the propagator in the radial gauge x(mu)A(mu)(x) = 0 are studied. After finding a particular solution GAMMA(murho)(x,y), the most general solution G(murho)0(x,y) of the homogeneous ... 
Vacuum correlations in quantum gravity
(Springer, 1992)We give a lowestorder estimation of some invariant correlation functions of quantized Einstein gravity in any dimension N > 2. The nonperturbative evaluation of such functions would play an important role in the Monte ... 
Femtosecond luminescence spectroscopy of carrier thermalization in GaAs and InP
(IOP PUBLISHING LTD, 1992)Thermalization of a nonequilibrium distribution of electrons and holes generated by femtosecond photoexcitation is studied in GaAs and InP via spectrally and temporally resolved luminescence. In both materials, a rapid ... 
Vacuum correlations in quantum gravity
(ELSEVIER SCIENCE BV, 1992)We give a lowestorder estimation of some invariant correlation functions of quantized Einstein gravity in any dimension N > 2. The nonperturbative evaluation of such functions would play an important role in the Monte ...