On the new relations between Gravity and Quantum Field Theories

Abstract

In this work, we review the modern aspects of quantum field theory and its relations with the theory of gravity. Around 60 years, the quantum fields has been the fundamental blocks in high energy physics. Similarly, for more than 100 years in the Einstein theory of general relativity, it has been the metric field of space-time the primordial. We shall see that changing our paradigms and considering the physical observables as fundamental, the two pillars of physics reveal amazing mathematical relations.