Quantum Gravity and String Theory

1206 Submissions

[8] viXra:1206.0104 [pdf] replaced on 2012-09-24 18:28:15

On Quantum Gravity and the Interpretation of Quantum Mechanics

Authors: Friedwardt Winterberg
Comments: 19 Pages.

It is shown that classical general relativity can be obtained as the limit of fully quantum mechanical vacuum made up of a dense assembly of positive and negative Planck mass particles in equal numbers, each of them occupying a Planck length volume. The positive and negative Planck masses can be viewed as mini black and white holes. Using Heisenberg’s dictionary to translate classical mechanical quantities into corresponding quantum quantities, the solution of the Boltzmann equation for this positive negative Planck mass assembly leads to the quantum mechanics of the positive and negative Planck mass particles. There then, the positive and negative Planck masses can be described by two superfluids, each one with a phonon-roton spectrum. General relativity emerges at large scales in regions with a difference between positive and negative masses, with a rippling of space-time near the Planck length. Following ‘tHooft’s conjecture that the solution of quantum gravity is connected to a deterministic interpretation of quantum mechanics, it is proposed that the universe is separated through an event horizon to a parallel universe, by 1099cm-3 Planck length Einstein-Rosen bridges kept open by the negative Planck masses, with time and space interchanged. The observable universe carries the particle nature of matter, while the hidden parallel universe its wave nature.
Category: Quantum Gravity and String Theory

[7] viXra:1206.0103 [pdf] submitted on 2012-06-28 01:24:05

On Clifford Space and Higher Curvature Gravity

Authors: Carlos Castro
Comments: 16 Pages. submitted to Foundations of Physics

Clifford-space Gravity is revisited and new results are found. A derivation of the proper expressions for the connections (with $torsion$) in Clifford spaces ( $C$-spaces) is presented. The introduction of hyper-determinants of hyper-matrices are instrumental in the derivation of the $ C$-space generalized gravitational field equations from a variational principle and based on the extension of the Einstein-Hilbert-Cartan action. We conclude by pointing out the relations of Clifford space gravity to Lanczos-Lovelock-Cartan higher curvature gravity with torsion and extended gravitational theories based on $ f ( R ), f ( R_{\mu \nu} ), ... $ actions, for polynomial-valued functions. Introducing nonmetricity furnishes higher curvature extensions of metric affine theories of gravity.
Category: Quantum Gravity and String Theory

[6] viXra:1206.0092 [pdf] replaced on 2013-10-21 02:04:39

A Physical Universe from the Universe of Codes

Authors: Andrea Gregori
Comments: 32 Pages.

We investigate the most general phase space of configurations, consisting of the collection of all possible ways of assigning elementary attributes, “energies”, to elementary positions, “cells”. We discuss how this space defines a “universe” with a structure that can be approximately described by a quantum-relativistic physical scenario in three space dimensions. In particular, we discuss how the Heisenberg’s Uncertainty and the bound on the speed of light arise, and what kind of mechanics rules on this space.
Category: Quantum Gravity and String Theory

[5] viXra:1206.0091 [pdf] submitted on 2012-06-26 03:53:33

The Superstring Representation of the Universe of Codes

Authors: Andrea Gregori
Comments: 18 Pages.

We discuss the continuum field theory limit of the physical scenario described in Ref.[1], the universe arising from the interpretation of the most general collection of logical codes in terms of distributions of units of energy along units of space. This limit leads in a natural way to string theory as the theory which allows to perturbatively parametrize the geometric structures in terms of propagating particles and fields. We discuss some general properties of the spectrum, masses and couplings, the existence of the strong force, with particular attention to the excited states, and the implications for the physics of high energy colliders.
Category: Quantum Gravity and String Theory

[4] viXra:1206.0061 [pdf] submitted on 2012-06-17 11:40:38

Loop Vectors in Curved D3-branes

Authors: Shreyak Chakraborty
Comments: 6 Pages. Readers are requested to read the other papers on FaTe String Theory written by me. These papers are available online. Google keyword- "shreyak chakraborty FaTe"

We prove the existence of loop vectors associated with dilaton field around D-branes. This analysis leads to the derivation of an important brane function.
Category: Quantum Gravity and String Theory

[3] viXra:1206.0060 [pdf] replaced on 2012-07-24 23:05:11

Does the Quantum Sum Rule Hold at the Big Bang?

Authors: A.W. Beckwith
Comments: 9 pages, re do of paper to accomodate great work by Stoica about removing GR singularity problem in cosmology

In Dice 2010 Sumati Surya brought up a weaker Quantum sum rule as a biproduct of a quantum invariant measure space. Our question is, does it make sense to have disjoint sets to give us quantum conditions for a measure at the origin of the big bang? We argue that the answer is no, which has implications as to quantum measures and causal set structure. What is called equation (1) in the text requires a length, and interval, none of which holds at a point in space-time.singularity. Planck’s length, if it exists, is a natural way to get about the ‘bad effects’ of a cosmic singularity at the beginning of space-time evolution, but if a new development is to believed, namely by Stoica in the article, about removing the cosmic singularity as a break down point in relativity, there is nothing which forbids space-time from collapsing to a point. If that happens, the cautions as to no disjoint intervals at a point, raise the questions as to the appropriateness of Surya’s quantum measure with full force. However, if we have to have Planck’s length, then the existence of quantum vector measures cannot be challenged and equation (1) holds. The existence of well defined equation (1) rests upon if a minimum Planck’s length is essential in the cosntruction of cosmology.
Category: Quantum Gravity and String Theory

[2] viXra:1206.0059 [pdf] submitted on 2012-06-16 06:34:37

Lanczos-Lovelock-Cartan Gravity from Clifford Space Geometry

Authors: Carlos Castro
Comments: 23 Pages. submitted to Int. J. Geom. Meth. Mod. Phys.

A rigorous construction of Clifford-space Gravity is presented which is compatible with the Clifford algebraic structure and permits the derivation of the expressions for the connections with $torsion$ in Clifford spaces ( $C$-spaces). The $ C$-space generalized gravitational field equations are derived from a variational principle based on the extension of the Einstein-Hilbert-Cartan action. We continue by arguing how Lanczos-Lovelock-Cartan higher curvature gravity with torsion can be embedded into gravity in Clifford spaces and suggest how this might also occur for extended gravitational theories based on $ f ( R ), f ( R_{\mu \nu} ), ... $ actions, for polynomial-valued functions. In essence, the Lanczcos-Lovelock-Cartan curvature tensors appear as Ricci-like traces of certain components of the $ C$-space curvatures. Torsional gravity is related to higher-order corrections of the bosonic string-effective action. In the torsionless case, black-strings and black-brane metric solutions in higher dimensions $ D > 4 $ play an important role in finding specific examples of solutions to Lanczos-Lovelock gravity.
Category: Quantum Gravity and String Theory

[1] viXra:1206.0054 [pdf] replaced on 2012-07-11 20:13:02

Investigating Initial Conditions of the WDM Equation in Flat Space in Initial Contions of Pre Planckian Physics to Electro-Weak Regime of Space-Time

Authors: A.W. Beckwith
Comments: 10 Pages. Re do of document due to Abhay Ashtekar criticisms

This document is due to reviewing an article by Maydanyuk and Olkhovsky, of a Nova Science conpendium as of “ The big bang, theory assumptions and Problems”, as of 2012, which uses the Wheeler De Witt equation as an evolution equation assuming a closed universe. Having the value of k, not as the closed universe, but nearly zero of a nearly flat universe, which leads to serious problems of interpretation of what initial conditions are. These problems of interpretations of initial conditions tie in with difficulties in using QM as an initial driver of inflation. And argue in favor of using a different procedure as far as forming a wave function of the universe initially. The author wishes to thank Abhay Ashtekar for his well thought out criticism but asserts that limitations in space-time geometry largely due to when Planck's constant is formed from semi classical reasoning , ie. Maxwells equations involving a closed boundary regime, in the boundary regime between Octonionic Geometry and quantum flat space non Octonionic geometry is a datum which Abhay Ashtekar may wish to take into consideration in carrying through his analysis
Category: Quantum Gravity and String Theory