Conceptual and Technical Challenges of Quantum Gravity - link.springer.com  ## Metadata - Author: **link.springer.com** - Full Title: Conceptual and Technical Challenges of Quantum Gravity - Category: #articles - URL: https://link.springer.com/article/10.1007/s10773-020-04520-2 ## Highlights - The appearance of infinity together with collapsing quantum state due to an observation or interaction which are two challenging features of quantum field theory, become very serious problems in quantum gravity as well as in quantum geometry of space-time - In the technical part the biggest problem comes from the point definition where the classical geometry is constructed on it. By changing the point definition, the technical problem may be approximately bypassed and a mathematical formulation of quantum geometry may be found. On the other hand, the conceptual problem comes from the quantum state collapse due to the observation since in presence of gravity the entanglement between the observer and gravity cannot be eliminated.