Generation of static solutions of a self-consistent system of Einstein-Klein-Gordon equations

1989 ◽  
Vol 32 (6) ◽  
pp. 418-421
Author(s):  
A. M. Anchikov ◽  
R. A. Daishev
Keyword(s):  
Consistent System ◽  
Static Solutions ◽  
Self Consistent ◽  
Klein Gordon

Real scalar field solutions of the EKG equations including matter

2020 ◽  
pp. 2150009
Author(s):  
A. Cabo Montes de Oca ◽  
D. Suarez Fontanella
Keyword(s):  
Dark Matter ◽  
Gravitational Field ◽  
Scalar Field ◽  
Scalar Fields ◽  
Stationary Solutions ◽  
Field Interaction ◽  
Small Bodies ◽  
Real Scalar ◽  
Static Solutions ◽  
Klein Gordon

Static (not stationary) solutions of the Einstein–Klein–Gordon (EKG) equations including matter are obtained for real scalar fields. The scalar field interaction with matter is considered. The introduced coupling allows the existence of static solutions in contraposition with the case of the simpler EKG equations for real scalar fields and gravity. Surprisingly, when the considered matter is a photon-like gas, it turns out that the gravitational field intensity at large radial distances becomes nearly a constant, exerting an approximately fixed force to small bodies at any distance. The effect is clearly related with the massless character of the photon-like field. It is also argued that the gravitational field can generate a bounding attraction, that could avoid the unlimited increase in mass with the radius of the obtained here solution. This phenomenon, if verified, may furnish a possible mechanism for explaining how the increasing gravitational potential associated to dark matter, finally decays at large distances from the galaxies. A method for evaluating these photon bounding effects is just formulated in order to be further investigated.

Ideology, Domination and Unemployment

1994 ◽  
Vol 42 (2) ◽  
pp. 315-340 ◽  
Author(s):  
Leo Howe
Keyword(s):  
Working Class ◽  
Consistent System ◽  
Dominant Ideology ◽  
Iron Cage ◽  
Political Relationships ◽  
Married Men ◽  
Self Consistent ◽  
Ideological Dimension

Criticisms of the neo-Marxist dominant ideology thesis tend to underemphasize the role which ideology plays in legitimating and sustaining systems of inequality, and instead to privilege explanations based on the ‘iron cage’ of economic and political relationships. A serious problem with some neo-Marxist analyses is the rather crude conceptualization of ideology which makes them susceptible to attack. Using material collected in Belfast amongst Protestant and Catholic working class, employed and unemployed, married men, this article seeks both to recast the notion of ideology, in particular to suggest that ideology would be better conceived not as a coherent, self-consistent system of ideas, but rather as a possibly contradictory set of themes whose primary importance lies in their specific, changing and tactical relationships to typical forms of practice, and also thereby to demonstrate how powerful and pervasive is the ideological dimension of domination.

Becoming-Deleuzian

1996 ◽  
Vol 14 (4) ◽  
pp. 395-406 ◽  
Author(s):  
Brian Massumi
Keyword(s):  
Open System ◽  
Closed System ◽  
Gilles Deleuze ◽  
Consistent System ◽  
Transcendental Empiricism ◽  
Actual Experience ◽  
Self Consistent ◽  
Pragmatic Dimension ◽  
The Ideal

The writings of poststructuralist philosopher Gilles Deleuze are intentionally designed to defy summary. Their ‘rhizomatic’ (infinitely bifurcating) form renders it impossible to generate a totalizable, self-consistent system from them. They are nevertheless highly ordered and produce concrete effects, including situated meanings and verifiable propositions. It is, in fact, the particular form of their openness which, far from consigning them to slippery irrelevance, charges them with pragmatic power. The pragmatic dimension of the works of Deleuze can be brought out by analyzing the process of their reception, rather than attempting to isolate their content as a closed system. In the encounter between the reader and the work, the work can be seen as performing its own content. That ‘content’ is conceptual, understood in a way that sharply distinguishes ‘concept’ from ‘proposition’. For Deleuze, the concept is a dynamism. It conveys a force that is real without ceasing to be ideal. This makes the encounter with the work a literal ‘event’ in which something always new transpires. Thus alongside situated meanings and verifiable propositions, the work also produces ‘becomings’. Becoming, for Deleuze, can only be grasped as a function of an open system, and with reference to an ontological distinction between the actual and the virtual. Deleuze's emphasis on the ideal as a literal force that enters actual experience without being contained in it, that is actualized without ceasing to be virtual, that cannot but be felt but always escapes, earns his philosophy the paradoxical label of ‘transcendental empiricism’.

scholarly journals Klein–Gordon–Maxwell Systems with Nonconstant Coupling Coefficient

2018 ◽  
Vol 18 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Monica Lazzo ◽  
Lorenzo Pisani
Keyword(s):  
Boundary Conditions ◽  
Electric Potential ◽  
Coupling Coefficient ◽  
Neumann Boundary ◽  
Spatial Domain ◽  
Neumann Boundary Conditions ◽  
Small Data ◽  
Maxwell System ◽  
Static Solutions ◽  
Klein Gordon

AbstractWe study a Klein–Gordon–Maxwell system in a bounded spatial domain under Neumann boundary conditions on the electric potential. We allow a nonconstant coupling coefficient. For sufficiently small data, we find infinitely many static solutions.

ELECTRON–PHONON MECHANISM OF SUPERCONDUCTIVITY IN THE TWO-BAND EMERY MODEL

1992 ◽  
Vol 06 (21) ◽  
pp. 1309-1318 ◽  
Author(s):  
MINH-TIEN CHAN ◽  
N. M. PLAKIDA
Keyword(s):  
Equation Of Motion ◽  
Square Lattice ◽  
Superconducting Transition ◽  
Consistent System ◽  
Phonon Mechanism ◽  
Emery Model ◽  
Self Consistent ◽  
The Matrix ◽  
Superconducting Pairing ◽  
Oxygen Band

The electron–phonon mechanism of superconducting pairing in the two-band Emery model on a square lattice is considered. On the basis of the equation of motion the self-consistent system of equations for the matrix electron Green function is obtained. The dependence of the superconducting transition temperature T c on the concentration of holes is calculated. It is shown that due to the exclusion of double occupancy of copper sites the maximum T c occurs at the concentrations of holes n ≈ 0.8 and n ≈ 2.3, which correspond to the Van Hove singularities in copper and oxygen band, respectively.

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