WebIn general relativity, a scalar field solution is an exact solution of the Einstein field equation in which the gravitational field is due entirely to the field energy and momentum of a … WebApr 4, 2024 · In violation of the generalized Lichnerowicz theorem advocated in , quadratic gravity admits vacua with scalar curvature. In a recent publication , we revitalized a program – that Buchdahl originated but prematurely abandoned circa 1962 – and uncovered a novel exhaustive class of static spherically symmetric vacua for pure ℛ 2 gravity. The Buchdahl …
Scalar field solution - Wikipedia
WebIn scalar-tensor theories, then, where this coefficient is replaced by some function of a field which can vary throughout spacetime, the "strength" of gravity (as measured by the local value of Newton's constant) will be different from place to place and time to time. 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 … express coupons for november
Scalar field - Wikipedia
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 ... Scalar 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 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 … bubbly can size