Quantum Gravity and String Theory

0907 Submissions

[6] viXra:0907.0037 [pdf] submitted on 24 Jul 2009

The Graviton Background Vs. Dark Energy

Authors: Michael A. Ivanov
Comments: 25 pages, 1 figure. Poster contribution to The Alternative Gravities and Dark Matter Workshop, Edinburgh, UK, 20-22 April 2006

In the model of low-energy quantum gravity by the author, cosmological redshifts are caused by interactions of photons with gravitons. Non-forehead collisions with gravitons will lead to an additional relaxation of any photonic flux. It gives a possibility of another interpretation of supernovae 1a data. Every massive body would be decelerated due to collisions with gravitons that may be connected with the Pioneer 10 anomaly. This mechanism needs graviton pairing and "an atomic structure" of matter for working it. Also an existence of black holes contradicts to the equivalence principle: any black hole should have a gravitational mass to be much bigger - about three orders - than an inertial one.
Category: Quantum Gravity and String Theory

[5] viXra:0907.0036 [pdf] submitted on 24 Jul 2009

Gravitational Asymptotic Freedom and Matter Filling of Black Holes

Authors: Michael A. Ivanov
Comments: 2 pages, no figure, Latex. Contribution to the International Meeting "Physical Interpretations of Relativity Theory" (PIRT-09), Moscow, Russia, 6 - 9 July 2009.

The property of asymptotic freedom of the model of low-energy quantum gravity by the author leads to the unexpected consequence: if a black hole arises due to a collapse of a matter with some characteristic mass of particles, its full mass should be restricted from the bottom. For usual baryonic matter, this limit of mass is of the order 107M
Category: Quantum Gravity and String Theory

[4] viXra:0907.0033 [pdf] submitted on 23 Jul 2009

Event-Symmetry for Superstrings

Authors: Philip Gibbs
Comments: 11 pages, Published in Int.J.Theor.Phys.37:1243-1252,1998

I apply the principle of event-symmetry to simple string models and discuss how these lead to the conviction that multiple quantisation is linked to dimension. It may be that string theory has to be formulated in the absence of space-time which will then emerge as a derived property of the dynamics. Another interpretation of the event-symmetric approach which embodies this is that instantons are fundamental. Just as solitons may be dual to fundamental particles instantons may be dual to space-time events. Event-symmetry is then dual to instanton statistics. In that case a unification between particle statistics and gauge symmetry follows on naturally from the principle of event-symmetry. I build algebras which represent symmetries of superstring theories extending event-symmetry but which are also isomorphic to an algebra of creation and annihilation operators for strings of fermionic partons.
Category: Quantum Gravity and String Theory

[3] viXra:0907.0032 [pdf] submitted on 23 Jul 2009

The Principle of Event-Symmetry

Authors: Philip Gibbs
Comments: 18 pages, Published in Int.J.Theor.Phys.35:1037-1062,1996.

To accommodate topology change, the symmetry of space-time must be extended from the diffeomorphism group of a manifold, to the symmetric group acting on the discrete set of space-time events. This is the principle of event-symmetric space-time. I investigate a number of physical toy models with this symmetry to gain some insight into the likely nature of event-symmetric space-time. In the more advanced models the symmetric group is embedded into larger structures such as matrix groups which provide scope to unify space-time symmetry with the internal gauge symmetries of particle physics. I also suggest that the symmetric group of space-time could be related to the symmetric group acting to exchange identical particles, implying a unification of space-time and matter. I end with a definition of a new type of loop symmetry which is important in event-symmetric superstring theory.
Category: Quantum Gravity and String Theory

[2] viXra:0907.0018 [pdf] replaced on 24 Oct 2009

Is the Sun's Warmth Gravitationally Attractive?

Authors: Peter Fred
Comments: Pages.

Experiments show that the gravitational mass of a test mass will increase when heat conducts upwards through it. A ~489 gm copper hemisphere was placed above a 1000 W heat element and below and two ice-filled copper containers. After 400 seconds of heating, the gravitational mass of the hemisphere had increased by 9.6 % or 47gm. If the sun's warmth decreases earth's dayside surface gravity by as little as 0.08 %, the produced pressure imbalance at its center will be enough to account for its centripetal acceleration towards the sun. This calculation suggests that bound systems such as stars, planets, galaxies and clusters have residing in them powerful "threedimensional lever" that can be activated by the slight warmth of a outside source of heat. Since with all these objects heat conducts from their centers outwards, an experimentally backed means becomes available to explain why they are bound that does not depend on the putative dark matter or the mysterious attractive power of mass. Observations indicate that the cosmic star formation rate declines at z ≈ 1 . They also indicate that at zt=0.61-0.21+3.68(1σ) that cosmic acceleration commences. If the former causes the latter, an experimentally backed way becomes available to account for cosmic acceleration that does not involve vast amounts of energy coming out of the vacuum.
Category: Quantum Gravity and String Theory

[1] viXra:0907.0001 [pdf] submitted on 9 Jul 2009

This Time - What a Strange Turn of Events!

Authors: Philip Gibbs
Comments: submission to the 2008 FXQi essay contest on "The Nature Of Time". Published in Presapcetime Journal V2, p162-171

In relativity time is bound to space by the symmetries of spacetime. In the general theory the symmetry is covariance under diffeomorphisms but in string theory this extends to the full permutation group acting on spacetime events. This huge symmetry has profound implications for the nature of time, causality and the way we see our place in the universe.
Category: Quantum Gravity and String Theory