Question The time space continuum has fascinated me since i was a small boy,of course it has all been relegated to science fiction up to this point,but it seems as though the fiction is rapidly becoming fact!. I have seen documenteries on time travel and that the navy experimented ..flirted..with time travel with limited results. or it might have been based on supposition?..at any rate,the theory exists!.My question is there a theory concerning time travel?. I know it sounds like i'm some sort of crack-pot?..but this subject has always intriqued me!..There was a time when flying was simply a theory?..so i don't think that anything is impossible!. I believe that there IS a working theory for time travel!..it's just that it is not known to us at this point. It's just that there has been no mind brilliant enough to form the formula!, Einstein,i believe,only left questions to the possiblities of what man could achieve!,,he was a brilliant man!,but..he is only the link in a chain..so to speak..So, what are your thoughts on time travel?..how close are we to actually achieving it?. I realize that there are a thousand variables to consider!..what it would do the human body,for one...but, i would be curious to know if the scientific community is working on such a project?
Answer Time travel is forbidden if we live in a single universe, because it gives rise to causality violations and paradoxes. For example, what if we could travel back in time and prevent our own conception? Therefore we would not exist to travel back in time to prevent our own conception... etc. But if we live in a "multiverse" of quantum possibility, reverse time travel is allowed, since, by travelling backwards in time, we are phase shifting into a parallel reality.
The universal constants are precisely balanced, such, that carbon based life, could not exist otherwise.
Now take those finely tuned constants out hundreds, thousands, millions, billions ...trillions of decimal places. Slight, almost infinitesimal differences between the constants of each universe which are actually resonances of a quantum "multiverse", mean that each resonance is unique.
The universes with the best probability for life to occur are at, or near the top of the curve.
From the graph of the normal curve, we can see that there are at least two universes exactly alike.
Also, there are many[millions? billions? ] of universes that are "almost" exactly alike.
The universes[timelines] begin to diverge more, as the curve diverges.
The worm-holes or Riemann cuts, connecting the different realities are where realities "overlap" for brief instants.
If we live in a multiverse, the possibilities for tapping into energy sources are virtually unlimited. The intrinsic curvature of space-time itself could be a form of stored energy via the compactified dimensions and the Weyl curvature tensor. The various GR books, seem to explain that the Weyl tensor C_abcd measures tidal distortion.
They start with the 256 = 4^4 component Riemann curvature tensor R_abcd, and then impose the symmetries required by curvature. Then the Riemann curvature tensor R_abcd has 20 independent components.
Decompose the R_abcd into the 10-component symmetric Ricci tensor R_ab and the 10-component conformal traceless Weyl tensor C_abcd. Then the Einstein tensor G_ab is given by
G_ab = R_ab - (1/2)R
where R is the Ricci scalar curvature.
Mach's principle seems to say that the distribution of matter-energy determines the geometry of space-time, and if there is no matter-energy then there is no geometry.
Mach's principle also says that a body in an otherwise empty universe should posess no inertial properties.
Yet, it seems to me that a universe[within a multiverse] that is totally devoid of matter would still have energy distortions allowing for uncertainty, giving a tidal distortion[gravity waves? quantum foams?] and hence, a non-zero Weyl tensor.
Stephen Hawking states that the Weyl tensor can and will be small but can never reach zero, because this would be a direct violation of the Heisenberg uncertainty principle.
Two different solutions to Einstein's field equations, represent the two types of curvature, Ricci and Weyl. The Kerr vacuum solution, models space-time outside a spherical rotating body such as a star, and it has a zero Ricci curvature, with a nonzero Weyl curvature at each event in the space-time. The general solution of Einstein's equations with the energy-momentum tensor of an ideal dust in a Friedman universe, which models the universe on a very large scale, has a zero Weyl curvature but a nonzero Ricci curvature at each event in the space-time.
The Weyl tensor becomes analogous to the electromagnetic field tensor F_ab, which can be seen as an antisymmetric 4x4 matrix with 6 independent components at each event in the space-time. Basically, the Einstein field equation can represented as a set of equations analogous to Maxwell's field equations, being a set of non-linear gravitational field equations.
The mathematics of quaternions incorporates an internal energy channel
via the hyperspace dimensions since they are an extension of complex
number theory. Chaos theory must be applied. Random variable
statistics doesn't give us the complete picture. Therefore one must
model/structure the resonate vacuum's virtual photon exchange, with
the higher dimensional mass of a charged particle, which will give a
new and fundamental level of engineering.
The hyperspatial virtual particle flux can be activated with a
particular structure-apparatus, a quantum vacuum machine[the quantum
computational analogue of a Turing machine], which will perform a
special job - computationally, modelling consciousness itself. It
appears that intelligence/consciousness itself IS a breaking[symmetry
breaking?] of the laws of physics! in that output is greater than the
input!
The quantum computational machine activates the local Riemann
curvature of spacetime itself, internally structuring that curvature
to our will, manipulating the Ricci and Weyl curvatures. That locally
curved spacetime then becomes a continuing, inexhaustible source of a
specialized vacuum energy via the vacuum engines. Tailor the local
vacuum so as to be able to violate any and all of the present
conservation laws?
The thermodynamic arrow of time is a sequence of symmetry breaking.
The negentropic effects of consciousness/self awareness are described
via a set of nonlinear partial differential equations.
The basic feature of cognitive functions appears to be the simulation
of possible future scenarios via a self modeling process. Memory
corresponds to a simulation of past to present to future plans, with
predictions to the simulation of ever further future scenarios. The
thermodynamic arrow of time shows how time gives a reliable simulation
of the past via repeatable experiments/memories, such, that it is so
reliable that one speaks of actual memories rather than predictions of
the past. The possible nonuniqueness of the classical spacetime and
related classical nondeterminism suggests a possible origin for the
simulatory aspects of consciousness built in to the geometric
structure of space-time.
The compactified dimensions could hold a tremendous amout of energy?
not unlike compressed springs: giving a potential energy, that can be
converted to kinetic energy.
A higher-dimensional universe was compactified into that of the
4-dimensional universe we now observe. The Kaluza compactified extra
dimensions appear as the diagonal term of 4-dimensional
energy-momentum tensor. Therefore, the average density of the
4-dimensional universe is affected accordingly.
The large extra dimensions that are felt only by gravity can reveal
themselves through the emission of gravitational Kaluza-Klein states.
The emission is a way of describing graviton "evaporation". Moreover,
because of the relatively large size of the extra dimension, the mass
difference between one Kaluza-Klein state and the next is very small.
There is therefore a huge number of such Kaluza-Klein excitations
below the new fundamental scale of gravity.
A typical process might involve a proton and antiproton colliding to
produce a single spray or jet of particles plus a graviton, which is
emitted into the compactified dimensional landscape.
Since the energy of the graviton would be lost from the macroscopic
4-D world, the experimental signature for such a process, would be an
excess of collisions with one jet and a "missing" energy, above and
beyond the expectations of the Standard Model.
Due to the stronger gravitational interactions at short distances,
there is a slight possibility that microscopic black holes can be
produced. Such small black holes would probably quickly evaporate and
not be dangerous. They would resemble exotic particles that decayed
very quickly. Hence gravity is also virtual.
What if it is possible to "feed" such a microscopic black hole with
photons? - electrons?, thus extending its lifetime?
Now imagine using two of these micro black holes to form a symmetric
hyperdimensional "warp-shell" over a space-craft, thus enabling its
Alcubierre warp drive.
With warp drive capabilities, time travel becomes an actuality.
