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Loop quantum gravity (LQG) is a theory of quantum gravity that incorporates matter of the Standard Model into the framework established for the intrinsic quantum gravity case. It is an attempt to develop a quantum theory of gravity based directly on Albert Einstein 's geometric formulation rather than the treatment of gravity as a mysterious ...
Gun safety advocates express horror at mass shooting in Texas . 9-year-old victim was friends with suspected shooter’s son, report says. 04:00, Ariana Baio. Daniel Enrique Laso-Guzman, the nine ...
The official account of what happened during a shooting at Robb Elementary School in Uvalde, Texas, is under scrutiny following the reporting of new details. Police narrative on Texas school ...
The loop representation also provides a natural solution of the spatial diffeomorphism constraint, making a connection between canonical quantum gravity and knot theory. Surprisingly there were a class of loop states that provided exact (if only formal) solutions to Ashtekar's original (ill-defined) Wheeler–DeWitt equation .
Hermann Nicolai, Kasper Peeters, Marija Zamaklar, "Loop Quantum Gravity: An Outside View," e-print available as hep-th/0501114. "Loop and Spin Foam Quantum Gravity: A Brief Guide for beginners" arXiv:hep-th/0601129 H. Nicolai and K. Peeters. Edward Witten, "Quantum Background Independence In String Theory," e-print available as hep-th/9306122.
“The victims and survivors of the mass shooting at Robb Elementary School deserved better,” Attorney General Merrick Garland said in a statement. “The law enforcement response at Robb ...
Loop quantum gravity theories, in contrast, place the origin and subsequently, the age of elementary particles, and the age of Lorentz invariance, beyond 13.799 ± 0.021 billion years ago. The permanence of Lorentz invariance constants is based on elementary particles and their features.
Authorities in Texas said that six bodies were found at three different crime scenes in San Antonio and Austin. A link between the crimes was not established until the suspect, 34-year-old Shane ...