By Jacob D. Bekenstein (auth.), Peter G. Bergmann, Venzo de Sabbata (eds.)

In this XVII process the overseas college of Cosmology and Gravitation dedicated to "ADVANCES within the interaction among QUANTUM AND GRAVITY PHYSICS" now we have thought of varied features of the impact of gravity on quantum structures. so as to accomplish that goal, in lots of lectures, seminars and discussions now we have bolstered the interaction among gravity and quantum platforms ranging from the location within the early universe according to astrophysical observations, as much as the earthly dependent experiments with atom interferometry for probing the constitution of space-time. therefore now we have had well timed lectures at the quantum box and horizon of a black gap together with reports of the matter of black holes thermodynamics and entropy, quantum info, quantum black holes, quantum evaporation and Hawking radiation, fresh advances in stockastic gravity. we've additionally mentioned quantum fluctuations in inflationary universe, quantum results and reheating after inflation, and superplanckian energies in Hawking radiation. during this regard the topic of spinors in basically affine space-time and Dirac topic in keeping with Weyl within the generalized conception of gravitation have been built . The dualism among space-time and subject has been deeply analyzed as a way to see why, for basic relativity, this is often a drawback for quantization of the speculation. additionally canonical Gravity and Mach's precept, torsion and curvature as commutator for Quantum Gravity and Dirac Geometry of genuine space-time have been analysed, including the matter of 5-Dimensional Projective Unified box concept and Multidimensional Gravity and Cosmology.

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28 Figure 1. Rubidium atoms are extracted from a cold Rubidium gas (left) and from a Bose-Einstein condensate (right). (Courtesy of the University of Munich I'll) indeed, microwave and optical atomic clocks are genuine atom interferometers [2]. 5 10- 16 ). Atom sources may now be coherent sources of matter-waves (Bose-Einstein condensates [6, 7], atom lasers or atomasers [8]) as illustrated in Fig. 1. We have to deal with a very different picture from that of small clocks carried by classical point particles.