WebED have been used to derive or reconstruct both non-relativistic quantum mechanics and quantum field theory in curved space-time. Here we propose a model for a quantum … WebA reconstruction scheme for f (R) gravity is presented in Section 2 and Section 3, demonstrating the cosmology of the chameleon scalar field under reconstructed f (R) …
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WebApr 10, 2024 · We study the properties of spacelike singularities in spherically symmetric spacetimes obeying the Einstein equations, in the presence of matter. We consider in particular matter described by a scalar field, both in the presence of an electromagnetic field and without. We prove that if a spacelike singularity obeying several reasonable … WebJan 9, 2012 · Called a "scalar field," it works just as well as G in describing the way the universe works, except that mathematically, unlike the constant, its strength is allowed to …
Webfield, in physics, a region in which each point has a physical quantity associated with it. The quantity could be a number, as in the case of a scalar field such as the Higgs field, or it could be a vector, as in the case of fields such as the gravitational field, which are associated with a force. Objects fall to the ground because they are affected by the force … WebOct 8, 2024 · Time invariant solutions of scalar field equations with zero mass vary like 1 / r, with r the distance from the "center" of the field. With a massive field, we get a variation of the form exp ( − m c ℏ r) / r, which reverts to the 1 / r variation as m → 0.
WebApr 10, 2014 · Gravity and Scalar Fields Thomas P. Sotiriou Gravity theories with non-minimally coupled scalar fields are used as characteristic examples in order to demonstrate the challenges, pitfalls and future perspectives of … WebApr 7, 2024 · Karim Noui, Hugo Roussille, David Langlois. We consider axial (or odd-parity) perturbations of non-spinning hairy black holes (BH) in shift-symmetric DHOST (Degenerate Higher-Order Scalar-Tensor) theories, including terms quartic and cubic in second derivatives of the scalar field. We give a new formulation of the effective metric in which ...
WebMay 18, 2024 · It take the position in space (x,y,z) and returns a number (a scalar) 3xyz. A vector field takes a position in space in returns a vector, which should be thought of as pointing from that position. The gravitational force created by a body is a vector field, while the potential is a scalar field.
WebWe often write the symbol that represents a scalar field as V ( r →) where the position vector ( r →) not only reminds us that the scalar field may vary from point to point in space, but … hold fire on thisWebMay 18, 2024 · 5 Conclusion. In this paper, we have discussed one of the well-known feature of the early universe, named as inflation by using power law f (T) gravity under the realm of canonical scalar field. The Lagrangian density \mathcal {L} (X,\varphi ) for canonical scalar field is \mathcal {L} (X,\varphi )=X-V (\varphi ). hudson county multiple listing serviceWebJun 3, 2005 · Abstract:A covariant scalar-tensor-vector gravity theory is developed which allows the gravitational constant $G$, a vector field coupling $\omega$ and the vector field mass $\mu$ to vary with space and time. The equations of motion for a test particle lead to a modified gravitational acceleration law that can fit hold firewoodScalar theories of gravitation are field theories of gravitation in which the gravitational field is described using a scalar field, which is required to satisfy some field equation. Note: This article focuses on relativistic classical field theories of gravitation. The best known relativistic classical field theory of … See more The prototypical scalar theory of gravitation is Newtonian gravitation. In this theory, the gravitational interaction is completely described by the potential $${\displaystyle \Phi }$$, which is required to satisfy the See more • Kaluza–Klein theory involves the use of a scalar gravitational field in addition to the electromagnetic field potential $${\displaystyle A^{\mu }}$$ in an attempt to create a five … See more • Nordström's theory of gravitation See more The first attempts to present a relativistic (classical) field theory of gravitation were also scalar theories. Gunnar Nordström created two such theories. Nordström's first … See more In 1913, Einstein (erroneously) concluded from his hole argument that general covariance was not viable. Inspired by Nordström's work, he proposed his own scalar theory. This theory employs a massless scalar field coupled to the stress–energy … See more • Goenner, Hubert F. M., "On the History of Unified Field Theories"; Living Rev. Relativ. 7(2), 2004, lrr-2004-2. Retrieved August 10, 2005. See more hudson county new jersey obituariesWebApr 25, 2024 · The scalar field partakes the gravitational interactions with the graviton. The wave equation of the scalar field is found to be described by a new matter-wave equation proposed by Arbab [ 6, 7 ]. This is a quantum Telegraph equation whose classical analog governs the propagation of the electric signals in transmission lines. hudson county nj agendasWebJan 1, 2014 · Gravity theories with non-minimally coupled scalar fields are used as characteristic examples in order to demonstrate the challenges, pitfalls and future … hudson county new jersey property tax recordsWeb: the scalar quantity characteristic of a point in a gravitational field whose gradient equals the intensity of the field and equal to the work required to move a body of unit mass from given point to a point infinitely remote Love words? hold fire for now meaning