Dirac gravity
WebGravitational potential energy can be defined as being negative, but it has no physical meaning since a potential energy is always defined up to a constant. Gravity is a force … WebMay 18, 2016 · With Dirac Power Sound technology inside, the Gravity speaker features a deceiving floating body and display while providing high-quality sound from a compact …
Dirac gravity
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WebDirac made fundamental contributions to the early development of both quantum mechanics and quantum electrodynamics. Among other discoveries, he formulated …
WebDec 20, 2024 · The Scattering of Dirac and Majorana Fermions in Spherically Symmetric Gravitational Field and Torsion Field. The possibility to distinguish Dirac from Majorana … Dirac's approach allows the quantization of systems that include gauge symmetries using Hamiltonian techniques in a fixed gauge choice. Newer approaches based in part on the work of DeWitt and Dirac include the Hartle–Hawking state , Regge calculus , the Wheeler–DeWitt … See more In physics, canonical quantum gravity is an attempt to quantize the canonical formulation of general relativity (or canonical gravity). It is a Hamiltonian formulation of Einstein's general theory of relativity. … See more In the Hamiltonian formulation of ordinary classical mechanics the Poisson bracket is an important concept. A "canonical coordinate system" consists of canonical position and momentum variables that satisfy canonical Poisson-bracket relations, See more A diffeomorphism can be thought of as simultaneously 'dragging' the metric (gravitational field) and matter fields over the bare manifold while staying in the same coordinate system, and so are more radical than invariance under a mere coordinate … See more Many of the technical problems in canonical quantum gravity revolve around the constraints. Canonical general relativity was originally formulated in terms of metric variables, … See more Canonical classical general relativity is an example of a fully constrained theory. In constrained theories there are different kinds of phase space: the unrestricted (also called kinematic) phase space on which constraint functions are defined and the reduced phase … See more The quantization is based on decomposing the metric tensor as follows, where the … See more The Wheeler–DeWitt equation (sometimes called the Hamiltonian constraint, sometimes the Einstein–Schrödinger equation) is rather central as it encodes the dynamics at the quantum level. It is analogous to Schrödinger's equation, except as the time … See more
WebJun 1, 2024 · In this section, we are going to discuss the gray-body factor for the Dirac field in 4D ESTGB gravity with a nonlinear electrodynamics, i.e., we calculate the reflection … WebFeb 6, 2024 · Einstein–Cartan theory is an extension of the standard formulation of General Relativity where torsion (the antisymmetric part of the affine connection) is non …
WebMay 15, 2007 · Exact solution of Dirac equation in 2+1 dimensional gravity Full Record Abstract We find exact solutions of the Dirac equation in the 2+1 dimensional curved …
In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including electromagnetic interactions, it describes all spin-1⁄2 massive particles, called "Dirac particles", such as electrons and quarks for which parity is a symmetry. It is consistent with both the principles of quantum mechanics and the theory of special relativity, and was the first theory to account fully for special relativity in the context of quantum … eze 10/10WebThe origin of the Dirac formulation in graphene is di erent from the one in high energy physics. 3 The spinorial nature of the elds in graphene{like materials emerges as a … hgkugWebDirac mass term to calculate the trace anomaly for a Weyl fermion coupled to an abelian gauge field and a gravity separately. We show once again that the trace anomaly of … hgkuhl