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Quantum 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, [1] such as in the vicinity of black holes or similar compact astrophysical objects, as well as in the early stages of the universe moments after the Big Bang.
It complies with the requirement of background independence, one of the fundamental tenets of quantum gravity. This work can be considered an essential breakthrough in asymptotic safety related studies on quantum gravity as it provides the possibility of nonperturbative computations for arbitrary spacetime dimensions.
His research is focused on understanding black holes and cosmology, viewed through the lens of quantum field theory and quantum gravity. [ 4 ] Harlow won the New Horizons in Physics Prize in 2019 for "fundamental insights about quantum information, quantum field theory, and gravity."
Another experiment examined a gravity shielding mechanism claimed by Podkletnov and Nieminen. [2] [6] Experimental investigation on the BPPP [7] and other experiments [8] found no evidence of the effect. [1] Research on quantum tunneling was sponsored by the BPPP. It was concluded that this is not a mechanism for faster-than-light travel. [1] [2]
In 2001, Maldacena proposed that an eternal black hole, an object defined in a gravitational theory, is equivalent to a certain entangled state involving two copies of the corresponding quantum mechanical theory. [8] Ordinary black holes emit Hawking radiation and eventually evaporate. An eternal black hole is a type of black hole that survives ...
Robert Laughlin, Nobel Laureate known for work on fractional quantum Hall effect; Andrei Linde, cosmologist and winner of Breakthrough Prize in Fundamental Physics; Xiaoliang Qi, quantum gravity and quantum information [10] Srinivas Raghu, condensed matter theorist [11] Leonardo Senatore, cosmologist and winner of New Horizons prize in physics [12]
In 2016, together with Ping Gao and Daniel Louis Jafferis [], he proposed a mechanism for traversable wormholes without exotic matter. [2] It is based on the interpretation of wormholes as pairs of quantum entangled particles (EPR) by Leonard Susskind and Juan Martín Maldacena, known as the ER-EPR conjecture; however, Wall and colleagues did not use the usual Einstein-Rosen Bridges, but that ...
In 2016, he has also brought tensor models to the relevance of holographic and quantum gravity theories, by using them as a generalization of the Sachdev–Ye–Kitaev model. [ 39 ] Witten has published influential and insightful work in many aspects of quantum field theories and mathematical physics, including the physics and mathematics of ...