WebLoop quantum gravity (LQG) is a theory of quantum gravity, which aims to merge quantum mechanics and general relativity, incorporating matter of the Standard Model into the framework established for the pure quantum gravity case. It is an attempt to develop a quantum theory of gravity based directly on Einstein's geometric formulation rather than …

WebQuantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics; it deals with environments in which neither gravitational nor quantum effects can be ignored, such as in the vicinity of black holes or similar compact astrophysical objects, such as neutron stars.. Three of the four …

WebLa gravità quantistica a loop (LQG, dal termine inglese Loop Quantum Gravity), conosciuta anche coi termini di gravità a loop, geometria quantistica e relatività generale canonica quantistica, è una teoria fisica di gravità quantistica, ovvero una teoria quantistica dello spazio-tempo che cerca di unificare la meccanica quantistica e la relatività generale

Webwhere F is the force, m 1 and m 2 are the masses of the objects interacting, r is the distance between the centers of the masses and G is the gravitational constant.. Current models of particle physics imply that the earliest instance of gravity in the Universe, possibly in the form of quantum gravity, supergravity or a gravitational singularity, along with ordinary …

WebGeneral relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.General relativity generalizes special relativity and refines Newton's law of universal gravitation, providing a unified description …

WebIn loop quantum gravity A detailed study of the quantum geometry of a black hole event horizon has been made using loop quantum gravity . [33] [34] Loop-quantization does not reproduce the result for black hole entropy originally discovered by Bekenstein and Hawking , unless the value of a free parameter is set to cancel out various constants such that the …

WebQuantum field theory emerged from the work of generations of theoretical physicists spanning much of the 20th century. Its development began in the 1920s with the description of interactions between light and electrons, culminating in the first quantum field theory—quantum electrodynamics.A major theoretical obstacle soon followed with the …

WebEntropic gravity, also known as emergent gravity, is a theory in modern physics that describes gravity as an entropic force—a force with macro-scale homogeneity but which is subject to quantum-level disorder—and not a fundamental interaction.The theory, based on string theory, black hole physics, and quantum information theory, describes gravity as …

WebLoop quantum cosmology (LQC) is a finite, symmetry-reduced model of loop quantum gravity that predicts a "quantum bridge" between contracting and expanding cosmological branches.. The distinguishing feature of LQC is the prominent role played by the quantum geometry effects of loop quantum gravity (LQG). In particular, quantum geometry …

WebDie Theorie der Schleifenquantengravitation (SQG, Loop-Quantengravitation, Loop-Theorie, engl.loop quantum gravity) ist ein Ansatz für eine Theorie der Quantengravitation, d. h. eine Theorie zur Vereinigung der Quantenphysik mit der allgemeinen Relativitätstheorie.Deren Vereinigung gilt heute als eine der größten Herausforderungen …