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RS Electrogravitic References: Part 5 of 19.
Here are some titles by Townsend Brown:
"The Wizard of Electro-Gravity: The Man Who Discovered how UFOs are powered."
by William L. Moore. In UFO Report magazine. Unfortunately the issue date is
not on this copy, and the magazine is at work.
A lot of the same information can be found in the book "The Philadelphia
Experiment: Project Invisibility" by William L. Moore with Charles Berlitz.
Chapter 10 "The Force Fields of Townsend Brown". These two items are the same,
I just don't know which one came first.
Also there is more than one book with the title "The Philadelphia Experiment".
You want the one with ISBN 0-449-20526-6.
"The Townsend Brown Electro-Gravity Device: A Comprehensive Evaluation by the
Office of NAVAL Research" 15 September 1952.
Such as "How I Control Gravity by T. Townsend Brown" from Science and
Invention Magazine Aug. 1929.
"Townsend Brown and his Anti-Gravity Discs" by Gaston Burridge in Fate
Magazine. No issue date is visible.
"Electrical Self-Potential in Rocks" by T.Townsend Brown, some time after
1/1976, but again no source is visible.
"Another Step Toward Anti-Gravity" by Gaston Burridge in The American Mercury,
June 1958, p77.
"Towards Flight without Stress or Strain... or Weight" by Intel, Washington,
D.C. [Doesn't make since but that is what it says.]
Some one just on the list here just reinvented "The Fluid Pump" by T.Townsend
Brown for the Whitehall-Rand Group, Washington DC ----------------------------
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Paper: gr-qc/9207002
From: RCAPOVI%CINVESMX.BITNET@ricevm1.rice.edu Date: Tue, 21 Jul 1992 17:52
CST
Title: Remarks on Pure Spin Connection Formulations of Gravity Authors:
Riccardo Capovilla and Ted Jacobson
Abstract: In the derivation of a pure spin connection action functional for
gravity two methods have been proposed. The first starts from a first order
lagrangian formulation, the second from a hamiltonian formulation. In this
note we show that they lead to identical results for the specific cases of
pure gravity with or without a cosmological constant.
Paper: hep-th/9210110 (Phys. Rev. D47, R5214 (1993).) From:
pullin@mail.physics.utah.edu (Jorge Pullin) Date: Tue, 20 Oct 92 11:18:14 MDT
QUANTUM EINSTEIN-MAXWELL FIELDS: A UNIFIED VIEWPOINT FROM THE LOOP
REPRESENTATION, R. Gambini, J. Pullin, 13pp. no figures.
We propose a naive unification of Electromagnetism and General Relativity
based on enlarging the gauge group of Ashtekar's new variables. We construct
the connection and loop representations and analyze the space of states. In
the loop representation, the wavefunctions depend on two loops, each of them
carrying information about both gravitation and electromagnetism. We find that
the Chern-Simons form and the Jones Polynomial play a role in the model.
Paper: gr-qc/9301012
From: porrati@MAFALDA.PHYSICS.NYU.EDU (Massimo Porrati) Date: Wed, 13 Jan 93
20:17:21 -0500
Massive Spin-5/2 Fields Coupled to Gravity: Tree-Level Unitarity vs. the
Equivalence Principle, Massimo Porrati, 6 pages.
I show that the gravitational scattering amplitudes of a spin-5/2 field with
mass $m\ll M_{Pl}$ violate tree-level unitarity at energies
$\sqrt{s}\approx\sqrt{mM_{Pl}}$ if the coupling to gravity is minimal.
Unitarity up to energies $\sqrt{s}\approx M_{Pl}$ is restored by adding a
suitable non-minimal term, which gives rise to interactions violating the
(strong) equivalence principle. These interactions are only relevant at
distances $d\lequiv 1/m$.
Paper: gr-qc/9303014
From: ISTVAN@RMK520.RMKI.KFKI.HU
Date: Wed, 10 Mar 1993 16:24:01 +0100 (WET) MAXWELL FIELDS IN SPACETIMES
ADMITTING NON-NULL KILLING VECTORS, by Istvan Racz, 7 pages,PACS numbers:
04.20.Cv, 04.20.Me, 04.40.+c
We consider source-free electromagnetic fields in spacetimes possessing a non-
null Killing vector field, $\xi^a$. We assume further that the electromagnetic
field tensor, $F_{ab}$, is invariant under the action of the isometry group
induced by $\xi^a$. It is proved that whenever the two potentials associated
with the electromagnetic field are functionally independent the entire content
of Maxwell's equations is equivalent to the relation $\n^aT_{ab}=0$. Since
this relation is implied by Einstein's equation we argue that it is enough to
solve merely Einstein's equation for these electrovac spacetimes because the
relevant equations of motion will be satisfied automatically. It is also shown
that for the exceptional case of functionally related potentials
$\n^aT_{ab}=0$ implies along with one of the relevant equations of motion that
the complementary equation concerning the electromagnetic field is satisfied.
Paper: gr-qc/9310007 (Physica Scripta 48, 649 (1993)) From: harald@nordita.dk
(Harald H. Soleng) Date: Mon, 4 Oct 93 13:18:04 +0100
INVERSE SQUARE LAW OF GRAVITATION IN (2+1)-DIMENSIONAL SPACE-TIME AS A
CONSEQUENCE OF CASIMIR ENERGY, H. H. Soleng, 10 pages, LaTeX, Report: UPR-
0540-T, To appear in Physica Scripta.
The gravitational effect of vacuum polarization in space exterior to a
particle in (2+1)-dimensional Einstein theory is investigated. In the weak
field limit this gravitational field corresponds to an inverse square law of
gravitational attraction, even though the gravitational mass of the quantum
vacuum is negative. The paradox is resolved by considering a particle of
finite extension and taking into account the vacuum polarization in its
interior.
Paper: gr-qc/9310019
From: rri!bri@rri.ernet.in (B.R.Iyer)
Date: Tue, 12 Oct 93 12:44:52 IST
THE FRENET SERRET DESCRIPTION OF GYROSCOPIC PRECESSION B.R.Iyer and
C.V.Vishveshwara , 37 pages, Paper in Latex.
The phenomenon of gyroscopic precession is studied within the framework of
Frenet-Serret formalism adapted to quasi-Killing trajectories. Its relation to
the congruence vorticity is highlighted with particular reference to the
irrotational congruence admitted by the stationary, axisymmetric spacetime.
General precession formulae are obtained for circular orbits with arbitrary
constant angular speeds. By successive reduction, different types of
precessions are derived for the Kerr - Schwarzschild - Minkowski spacetime
family. The phenomenon is studied in the case of other interesting spacetimes,
such as the De Sitter and Godel universes as well as the general stationary,
cylindrical, vacuum spacetimes.
Paper: gr-qc/9310030
From: khatsymovsky Date: Thu, 21 Oct 93 16:39:25
+0100
Can wormholes exist? V.Khatsymovsky, 10 pages, Plain LaTeX, preprint UUITP-
20/1993
Renormalized vacuum expectation values of electromagnetic stress-energy tensor
are calculated in the background spherically-symmetrical metric of the
wormhole's topology. Covariant geodesic point separation method of
regularization is used. Violation of the weak energy condition at the throat
of wormhole takes place for geometry sufficiently close to that of infinitely
long wormhole of constant radius irrespectively of the detailed form of
metric. This is an argument in favour of possibility of existence of
selfconsistent wormhole in empty space maintained by vacuum field fluctuations
in the wormhole's background.
Paper: hep-th/9402046
From: LANDI@SUHEP.PHY.SYR.EDU
Date: Tue, 08 Feb 1994 15:09:39 -0500 (EST) GRAVITY AND ELECTROMAGNETISM IN
NONCOMMUTATIVE GEOMETRY, Giovanni Landi, Nguyen Ai Viet, Kameshwar C.Wali, 1 +
11 pages, Report # SU-4240-566,
We present a unified description of gravity and electromagnetism in the
framework of a Z2 noncommutative differential calculus. It can be considered
as a ``discrete version" of Kaluza-Klein theory, where the fifth continuous
dimension is replaced by two discrete points. We derive an action which
coincides with the dimensionally reduced one of the ordinary Kaluza-Klein
theory.
Paper: gr-qc/9404016
From: David Garfinkle Date: Sun, 10 Apr 1994
17:44:50 -0400
Generating new magnetic universe solutions from old. By David Garfinkle and
M.A. Melvin. 17 pages
In this paper we apply the techniques which have been developed over the last
few decades for generating nontrivially new solutions of the Einstein-Maxwell
equations from seed solutions for simple spacetimes. The simple seed spacetime
which we choose is the "magnetic universe" to which we apply the Ehlers
transformation. Three interesting non-singular metrics are generated. Two of
these may be described as "rotating magnetic universes" and the third as an
"evolving magnetic universe." Each is causally complete - in that all timelike
and lightlike geodesics do not end in a finite time or affine parameter. We
also give the electromagnetic field in each case. For the two rotating
stationary cases we give the projection with respect to a stationary observer
of the electromagnetic field into electric and magnetic components.
Paper: gr-qc/9404065 (Phys. Rev. D50 (1994) 6190) From: carroll@marie.mit.edu
(Sean Carroll) Date: Sun, 1 May 1994 16:35:00 -0400
Energy-Momentum Restrictions on the Creation of Gott Time Machines, by Sean M.
Carroll, Edward Farhi, Alan H. Guth, and Ken D. Olum. Plain TeX, 41 pages
incl. 9 figures. MIT-CTP #2252.
The discovery by Gott of a remarkably simple spacetime with closed timelike
curves (CTC's) provides a tool for investigating how the creation of time
machines is prevented in classical general relativity. The Gott spacetime
contains two infinitely long, parallel cosmic strings, which can equivalently
be viewed as point masses in (2+1)-dimensional gravity. We examine the
possibility of building such a time machine in an open universe. Specifically,
we consider initial data specified on an edgeless, noncompact, spacelike
hypersurface, for which the total momentum is timelike (i.e., not the momentum
of a Gott spacetime). In contrast to the case of a closed universe (in which
Gott pairs, although not CTC's, can be produced from the decay of stationary
particles), we find that there is never enough energy for a Gott-like time
machine to evolve from the specified data; it is impossible to accelerate two
particles to sufficiently high velocity. Thus, the no-CTC theorems of Tipler
and Hawking are enforced in an open (2+1)-dimensional universe by a mechanism
different from that which operates in a closed universe. In proving our
result, we develop a simple method to understand the inequalities that
restrict the result of combining momenta in (2+1)-dimensional gravity.
Paper: gr-qc/9405050
From: MATSAS@IFT.UESP.ANSP.BR
Date: Mon, 23 May 1994 15:01 BSC (-0300 C) DO INERTIAL ELECTRIC CHARGES
RADIATE WITH RESPECT TO UNIFORMLY ACCELERATED OBSERVERS?, George E.A. Matsas,
6 pages (REVTEX 3.0), IFT-P017/94.
We revisit the long standing problem of analyzing an inertial electric charge
from the point of view of uniformly accelerated observers in the context of
semi-classical gravity. We choose a suitable set of accelerated observers with
respect to which there is no photon emission coming from the inertial charge.
We discuss this result against previous claims [F. Rohrlich, Ann. Phys. (N.Y.)
vol: 22, 169 (1963)]. (This Essay was awarded a Honorable Mention for 1994 by
the Gravity Research Foundation.)
Paper: gr-qc/9406032
From: wam@tdo-serv.lanl.gov (Warner A. Miller) Date: Mon, 20 Jun 94 14:44:42
MDT
Spin Dynamics of the LAGEOS Satellite in Support of a Measurement of the
Earth's Gravitomagnetism, Salman Habib, Daniel E. Holz, Arkady Kheyfets,
Richard A. Matzner, Warner A. Miller and Brian W. Tolman, 16 pages, RevTeX,
LA-UR-94-1289. (Part I of II, postscript figures in Part II).
LAGEOS is an accurately-tracked, dense spherical satellite covered with 426
retroreflectors. The tracking accuracy is such as to yield a medium term
(years to decades) inertial reference frame determined via relatively
inexpensive observations. This frame is used as an adjunct to the more
difficult and data intensive VLBI absolute frame measurements. There is a
substantial secular precession of the satellite's line of nodes consistent
with the classical, Newtonian precession due to the non-sphericity of the
earth. Ciufolini has suggested the launch of an identical satellite (LAGEOS-3)
into an orbit supplementary to that of LAGEOS-1: LAGEOS-3 would then
experience an equal and opposite classical precession to that of LAGEOS-1.
Besides providing a more accurate real-time measurement of the earth's length
of day and polar wobble, this paired-satellite experiment would provide the
first direct measurement of the general relativistic frame-dragging effect. Of
the five dominant error sources in this experiment, the largest one involves
surface forces on the satellite, and their consequent impact on the orbital
nodal precession. The surface forces are a function of the spin dynamics of
the satellite. Consequently, we undertake here a theoretical effort to model
the spin ndynamics of LAGEOS. In this paper we present our preliminary
results.
Paper: gr-qc/9407003
From: William Bruckman Date: Tue, 5 Jul 94 09:06:49
EDT
Generation of Electro and Magneto Static Solutions of the Scalar-Tensor
Theories of Gravity, William Bruckman, 28 pages, LaTeX.
The field equations of the scalar-tensor theories of gravitation are presented
in different representations, related to each other by conformal
transformations of the metric. One of the representations resembles the
Jordan-Brans-Dicke theory, and is the starting point for the generation of
exact electrostatic and magnetostatic exterior solutions. The corresponding
solutions for each specific theory can be obtained by transforming back to the
original canonical representation, and the conversions are given for the
theories of Jordan-Brans-Dicke, Barker, Schwinger, and conformally invariant
coupling. The electrostatic solutions represent the exterior metrics and
fields of configurations where the gravitational and electric equipotential
surfaces have the same symmetry. A particular family of electrostatic
solutions is developed, which includes as special case the spherically
symmetric solutions of the scalar-tensor theories. As expected, they reduce to
the well-known Reissner-Nordstrom metric when the scalar field is set equal to
a constant. The analysis of the Jordan-Brans-Dicke metric yields an upper
bound for the mass-radius ratio of static stars, for a class of interior
structures.
Paper: gr-qc/9407030
From: Marco SISSA +39(40)3787522 Date: Thu, 21 Jul
1994 15:10:04 +0200
QUANTUM ELECTROMAGNETIC WORMHOLES AND GEOMETRICAL DESCRIPTION OF THE ELECTRIC
CHARGE by Marco Cavaglia 13 pages, PLAIN TEX, Report No: SISSA 92/94/A (to
appear in Phys. Rev. D15).
I present and discuss a class of solutions of the Wheeler-de Witt equation
describing wormholes generated by coupling of gravity to the electromagnetic
field for Kantowski-Sachs and Bianchi I spacetimes. Since the electric charge
can be viewed as electric lines of force trapped in a finite region of
spacetime, these solutions can be interpreted as the quantum corresponding of
the Ein-stein--Rosen--Misner--Wheeler electromagnetic geon.
Paper: gr-qc/9409060 (Annals of Physics vol. 240 432--458 (1995)) From:
soleng@surya11.cern.ch (Harald SOLENG) Date: Thu, 29 Sep 94 14:01:03 +0100
Modification of the Coulomb potential from a Kaluza-Klein model with a Gauss-
Bonnet term in the action, by H. H. Soleng and O. Gron, 27 pages, compressed
and uuencoded postscript file with unpacking instructions; major revision to
section IV.D.2 on pages 15-16 ("Corrections to the Coulomb potential at short
distances") and to the figure on page 27, to be published in The Annals of
Physics (NY), NORDITA 94/50
In four dimensions a Gauss-Bonnet term in the action corresponds to a total
derivative, and it does not contribute to the classical equations of motion.
For higher-dimensional geometries this term has the interesting property
(shared with other dimensionally continued Euler densities) that when the
action is varied with respect to the metric, it gives rise to a symmetric,
covariantly conserved tensor of rank two which is a function of the metric and
its first and second order derivatives. Here we review the unification of
General Relativity and electromagnetism in the classical five-dimensional,
restricted (with g55 = 1) Kaluza-Klein model. Then we discuss the
modifications of the Einstein-Maxwell theory that results from adding the
Gauss-Bonnet term in the action. The resulting four-dimensional theory
describes a non-linear U(1) gauge theory non-minimally coupled to gravity. For
a point charge at rest, we find a perturbative solution for large distances
which gives a mass-dependent correction to the Coulomb potential. Near the
source we find a power-law solution which seems to cure the short-distance
divergency of the Coulomb potential. Possible ways to obtain an experimental
upper limit to the coupling of the hypothetical Gauss-Bonnet term are also
considered.
Paper: hep-th/9410046
From: M.J. Duff Date: Fri, 7 Oct 94 13:04:15 BST
KALUZA-KLEIN THEORY IN PERSPECTIVE, M. J. Duff, 38 pages latex, NI-94-015
The Kaluza-Klein idea of extra spacetime dimensions continues to pervade
current attempts to unify the fundamental forces, but in ways somewhat
different from that originally envisaged. We present a modern perspective on
the role of internal dimensions in physics, focussing in particular on
superstring theory. A novel result is the interpretation of Kaluza-Klein
string states as extreme black holes.(Talk delivered at the Oskar Klein
Centenary Nobel Symposium, Stockholm, September 19-21, 1994.)
Paper: gr-qc/9509018
From: nunez@venus.fisica.unlp.edu.ar (NUNEZ Carlos) Date: Fri, 8 Sep 95
15:05:13 EST
Title: On Pseudospherically Symmetric Repulsive Gravitational Field Authors:
Luis A. Anchordoqui, Graciela S. Birman, Jose D. Edelstein and Carlos Nunez
Report-no: La Plata-Th 95/23
The solution of Einstein vacuum equation, for a static pseudospherically
symmetric system, is presented. It describes a singular solution that produces
a repulsive gravitational field with an event horizon. We analyse particle
motion in such a gravitational field and comment on some interesting features
of the solution. -------------------------------------------------------------
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"The Origin of the Electromagnetic Interaction in Einstien's Unified
Field Theory", Antoci,S. General Relativity and Gravitation, Vol 23 No 1, 1991
Recently it has been shown that, if sources are appended in a certain way to
the field equations of Einstein's unified theory, the contracted Bianchi
identities and the field operations appear endowed with definite physical
meaning. The theory looks like a gravoelectrodynamics in a polarizable
Riemmannian continuum. The wealth of the implied possibilities is far richer
than in the so-called Einstein-Maxwell theory. -------------------------------
--------------------------------------------
Paper: HEP-TH/9411092
From: hssong@phyy.snu.ac.kr
Date: Mon, 14 Nov 94 15:19:29 KST
Title: Factorization and polarization in linearized gravity Authors: S.Y.
Choi, J.S. Shim, H.S. Song Comments: 45 pages, figures are included (uses
pictex), RevTex Report-no: KEK-TH-415, HYUPT-94/10, SNUTP 94-03,
We investigate all the four-body graviton interaction processes: gX -> gamma
X, gX -> gX, and gg -> gg,
with X as an elementary particle of spin less than two in the context of
linearized gravity except the spin-3/2 case. We show explicitly that
gravitational gauge invariance and Lorentz invariance cause every four-body
graviton scattering amplitude to be factorized. We explore the implications of
this factorization property by investigating polarization effects through the
covariant density matrix formalism in each four-body graviton scattering
process.
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Causality, electromagnetic induction, and gravitation : a different approach
to the theory of electromagnetic and gravitational fields/ Oleg D. Jefimenko.
Star City [West Virginia] : Electret Scientific Co., c1992. xii, 180 p. : LC
CALL NUMBER: QC665.E4 J44 1992
SUBJECTS: Electromagnetic fields. Gravitational fields. Causality. Maxwell
Equations.
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