Quantum Gravity and String Theory

2106 Submissions

[12] viXra:2106.0172 [pdf] submitted on 2021-06-30 06:02:28

Introduction to Quantum Gravity

Authors: Alaya Kouki
Comments: 14 Pages.

In this article, we had done a link between the gravitational field and the square of the speed of a corpuscle exactly as the intuition of Henri Poincare. This theory is the zone of the meeting of classical mechanics, restraint relativity, quantum mechanics, and the theory of gravitation.
Category: Quantum Gravity and String Theory

[11] viXra:2106.0155 [pdf] replaced on 2025-05-16 22:27:08

Metric Science

Authors: Gerhard Jan Smit, Jelle Ebel van der Schoot
Comments: 82 Pages.

In this article a particle is being presented that explains all known forces of nature. The particle has no dimensions, it is a dimensional basic particle. Hence it gets the following name: 'dimensional basic' (db) particle. The core of this discovery is that the separate fundamental forces of nature: - the strong interaction, the electromagnetic interaction, the weak interaction and the gravitational interaction - are calculatable with one formula out of one principle. The statistical math of the quantum theory is set aside in favor of a goniometric approach. Gravitation is the only force that matters and the strong force, the electromagnetic force and the weak force can be explained out of gravitation while gravity itself is only caused by the curvature of db's. The formula for the extent of curvature around a db is: sqrt(x^2+y^2+z^2) × Kr = 1. In the formula: x, y, z, are coordinates in spacetime [m], Kr = curvature [m^-1].
Category: Quantum Gravity and String Theory

[10] viXra:2106.0112 [pdf] submitted on 2021-06-19 10:03:47

A Toy Gravity Universe and the Quantum Graviton

Authors: Thomas Neil Neubert
Comments: 58 Pages.

Beginning with a gravity gedanken experiment; this paper predicts a null result for CERN 31’s upcoming antimatter free-fall gravity experiment. That prediction that antihydrogen will neither fall up nor down in Earth’s gravitational field; builds out into a Toy Gravity Universe which has subtle repulsive gravitational force and leads to the definition of the quantum graviton. After 100 years, there is no agreed upon merger of gravity and the quanta. Something obvious has been missed. There is no such thing as an obvious gravity experiment. Yet views such Dragan Slavkov Hajdukovic32 are common, “An amusing (while non-scientific) question is why so many great experimentalists waste significant time on experiments whose outcomes are known in advance (according to the nearly unanimous prediction of theorists, antimatter must fall in the same way as matter).” That certainty needs to be loosened. A minority of theorists believe that antimatter falls up. Virtually none support my view that antimatter falls neither up nor down in Earth’s gravitational field. In my mind a null result holds the key to defining the quantum graviton as this Toy Gravity Universe will do. This Toy Gravity Universe is built without changing standard equations physics, the constants of nature, or disagreeing with the physical evidence. With these constraints, building a Toy Gravity Universe is achieved by reinterpreting concepts, theories and equations with reason applied to physical evidence and insight. This Toy Gravity Universe is composed of subUniverseR (i.e. our visible universe) and subUniverseI, which has imaginary number dimensions and is CPT symmetric to subUniverseR. These two subUniverses are large enough, finite, non-inflating 3-spheres related mathematically by T-duality and physically connected by gravity. Quantum mechanics and the gravity of Newton and Einstein give essential clues in the development of this Toy Gravity Universe. New CPT particles and CPT antiparticles will necessarily be added to the Standard Model of Elementary Particles; these are not supersymmetry particles. The Concordance Model of Cosmology’s interpretations of cosmic redshift evidence and CMB evidence will be replaced with Toy Gravity Universe interpretations that don’t require inflation. Finally, if CERN 31’s upcoming antimatter free fall gravity experiment shows that antihydrogen falls up or down in Earth’s gravitational field (rather than give a null result); then the predictions and interpretations of this Toy Gravity Universe collapse like a house of cards.
Category: Quantum Gravity and String Theory

[9] viXra:2106.0101 [pdf] submitted on 2021-06-17 14:38:56

Three Dimensional Space-Time Gravitational Metric, 3 Space + 3 Time Dimensions

Authors: Espen Gaarder Haug
Comments: 16 Pages.

We have recently suggested a new quantum gravity theory that can be unified with quantum mechanics. We have coined this theory collision space-time. This new theory seems to be fully consistent with a 3-dimensional space-time, that is, three space dimensions and three time-dimensions, so some would call it six-dimensional. However, we have shown that collision-time and collision-length (space) are just two different sides of the same ”coin” (space-time), so it is more intuitive to think of them as 3-dimensional space-time. In previous papers, we have not laid out a geometric coordinate system for our theory that also considers gravity, but we will do that here. We are pointing out that Einstein’s negative attitude towards relativistic mass can perhaps cause a weakness in the foundation of general relativity theory. When a relativistic mass is incorporated in the theory, this mass also seems to indicate one needs to move to three-dimensional space-time. Then, for example, our new theory matches fully up with all the properties of the Planck scale in relation to the mathematical properties of micro black holes, not only mathematically but also logically, something we demonstrate clearly is not the case of general relativity theory. Our new metric has many benefits as an alternative to the Schwarzschild metric and general relativity theory. It seems to be more consistent with the Planck units than the Schwarzschild metric. Most importantly, it seems to be fully consistent with a new quantum gravity theory that seems to unify gravity with quantum mechanics.
Category: Quantum Gravity and String Theory

[8] viXra:2106.0089 [pdf] submitted on 2021-06-14 03:20:43

The Universal Constructions of Heterotic Vacua in Complex and Hermitian Moduli Superspaces

Authors: Boris Stoyanov
Comments: 38 Pages.

In the present article we construct universal representations of a heterotic vacua in the conditions of the complex structure and hermitian moduli spaces. We show that it agrees with the results that have recently been obtained from a ten-dimensional perspective where supersymmetric Minkowski solutions including the Bianchi identity correspond to an integrable holomorphic structure, with infinitesimal moduli calculated by its first cohomology. As has recently been noted, interplay of complex structure and bundle deformations through holomorphic and anomaly constraints can lead to fewer moduli than may have been expected. We derive a relation between the number of complex structure and bundle moduli removed from the low energy theory in this way, and give conditions for there to be no complex structure moduli or bundle moduli remaining in the low energy theory. The link between Yukawa couplings and obstruction theory is also briefly discussed.
Category: Quantum Gravity and String Theory

[7] viXra:2106.0088 [pdf] submitted on 2021-06-14 03:24:13

The General Aspects of Heterotic Superstring/F-Theory Duality Correspondence of Moduli Superspaces

Authors: Boris Stoyanov
Comments: 58 Pages.

In the present article we aim to broaden the consideration of background geometry of manifolds/bundles arising in heterotic compactifications with an aim towards extending the validity and understanding of heterotic/F-theory duality. In particular, we will focus on elliptically fibered Calabi-Yau geometries arising in heterotic theories in the context of the so-called Fourier Mukai transforms of vector bundles on elliptically fibered manifolds. The duality between the Heterotic and F-theory is a powerful tool in gaining more insights into F-theory description of low-energy chiral multiplets. We propose a generalization of heterotic/F-theory duality and in order to complete the translation, the dictionary of the heterotic/F-theory duality has to be refined in some aspects. The precise map of spectral surface and complex structure moduli is obtained, and with the map, we find that divisors specifying the line bundles correspond precisely to codimension singularities in F-theory.
Category: Quantum Gravity and String Theory

[6] viXra:2106.0087 [pdf] submitted on 2021-06-14 03:27:21

The Extremal Higher Dimensional Constructions of Fundamental Brane–Antibrane Systems

Authors: Boris Stoyanov
Comments: 36 Pages.

We calculate the extremal higher dimensional effective actions of fundamental brane-antibrane systems elegantly presented in the theoretical framework of advanced membrane theory constructions. Detailed study of brane-antibrane systems reveals when brane separation is smaller than the superstring length scale, spectrum of this system has different tachyonic modes and interaction regimes in the moduli superspace. The higher dimensional effective actions should then include these modes because they are the most important ones which rule the extremal dynamics of the fundamental brane systems. In this regard, it has been shown that an effec- tive action of Born-Infeld type proposed in the current literature can capture many properties of the decay of non-BPS Dp-branes in superstring and membrane theory. The effective actions of brane-antibrane systems in Types IIA and IIB superstring theories should be given by some extension of the DBI action and the WZ terms which include the tachyon field configurations. The DBI part may be given by the projection of the effective action of two non-BPS Dp-branes in Type IIB theory. We are interested in this paper in the appearance of tachyon, gauge field and the RR field in these extremal higher dimensional actions. Using the consistency of the present constructions, we have also found the first higher derivative corrections to the exceptional part of the extremal effective actions with brane-antibrane systems.
Category: Quantum Gravity and String Theory

[5] viXra:2106.0082 [pdf] submitted on 2021-06-12 21:16:38

Further Insights into Thermal Relativity Theory and Black Hole Thermodynamics

Authors: Carlos Castro
Comments: 13 Pages.

We continue to explore the consequences of Thermal Relativity Theory to the physics of black holes. The thermal analog of Lorentz transformations in the $tangent$ space of the thermodynamic manifold are studied in connection to the Hawking evaporation of Schwarzschild black holes and one finds that there is $no$ bound to the thermal analog of proper accelerations despite the maximal bound on the thermal analog of velocity given by the Planck temperature. The proper entropic infinitesimal interval corresponding to the Kerr-Newman black hole involves a $ 3 \times 3 $ non-Hessian metric with diagonal and off-diagonal terms of the form $ ( d{\bf s} )^2 = g_{ ab } ( M, Q, J ) d Z^a dZ^b$, where $ Z^a = M, Q, J $ are the mass, charge and angular momentum, respectively. Black holes in asymptotically Anti de Sitter (de Sitter) spacetimes are more subtle to study since the mass turns out to be related to the $enthalpy$ rather that the internal energy. We finalize with some remarks about the thermal-relativistic analog of proper force, the need to extend our analysis of Gibbs-Boltzmann entropy to the case of Reny and Tsallis entropies, and to complexify spacetime.
Category: Quantum Gravity and String Theory

[4] viXra:2106.0080 [pdf] submitted on 2021-06-13 20:01:35

The Exclusive Higher Dimensional Reductions of Heterotic and IIB Supergravity Theories

Authors: Boris Stoyanov
Comments: 22 Pages.

Superstring theory is the most promising candidate for unified quantum theory of the fundamental interactions including gravity. The purpose of this investigation is to study toroidal compactification of the type IIB theory and implications of SL(2, R) symmetry for the reduced action. It has been shown recently that the toroidally compactified type IIB string effective action possesses an SL(2, R) invariance as a consequence of the corresponding symmetry in ten dimensions when the self-dual five-form field strength is set to zero. We will study the toroidal compactification of type IIB string theory and explore some of the consequences of SL(2, R) invariance of ten dimensional theory. The compactified theory on a d-dimensional torus respects the symmetry when specify the transformation properties of the resulting scalar and vector fields.
Category: Quantum Gravity and String Theory

[3] viXra:2106.0079 [pdf] submitted on 2021-06-13 20:01:08

Bulk Branes in Supergravity Theories

Authors: Boris Stoyanov
Comments: 25 Pages.

We construct a consistent supersymmetric action for brane chiral and vector multiplets in a six-dimensional chiral gauged supergravity. A nonzero brane tension can be accommodated by allowing for a brane-localized Fayet-Iliopoulos term proportional to the brane tension. When the brane chiral multiplet is charged under the bulk U(1)R, we obtain a nontrivial coupling to the extra component of the U(1)R gauge field strength and a singular scalar self-interaction term. In the context of D = 5, N = 2, Yang-Mills Supergavity compactified on S 1/Z2 we consider the supersymmetric coupling of matter fields propagating on the brane. To solve the discrepancy between the bulk actions with limited field content and the wide range of brane actions that involve all the possible R-R forms, we have constructed a new formulation of IIA/IIB supergravity up to quartic order in fermions.
Category: Quantum Gravity and String Theory

[2] viXra:2106.0056 [pdf] submitted on 2021-06-10 13:59:59

Alzofon-Ionescu Theory of Gravity

Authors: Lucian M Ionescu
Comments: 8 pages

Gravity is not a fundamental force. Alzofon’s Thermodynamic GravityTheory is derived from Qubit Model, an upgrade of the Quark Model within theStandard Model. Alzofon’s experiment is discussed: pros and cons. At the level of the Standard Model, Gravity is a result of the structure of the electric charges of quarks in nucleons, subject to Platonic symmetry and lack of parity invariance, related to CP-violation, due to the dihedral group as the QuantumMirror Symmetry group.The AGNUE experiment performed at Hathaway Research International is briefly explained. It is designed to test Alzofon’s Theory. A glimpse of Gravity Control and what inertial mass is are presented. FurtherR&D will be funded under the upcoming Kickstarter Gravity.
Category: Quantum Gravity and String Theory

[1] viXra:2106.0008 [pdf] submitted on 2021-06-03 15:23:20

Quantum Gravity by Elimination of Spacetime

Authors: René Friedrich
Comments: 6 Pages. Essay written for the Gravity Research Foundation 2021 Awards for Essays on Gravitation.

A new approach is presented here for quantum gravity, and for the question why curved spacetime is not compatible with quantum mechanics. The answer: Curved spacetime is not fundamental because it is not Lorentz-invariant. We show that Lorentz-covariant spacetime is only the way how the universe of general relativity is perceived and measured by observers, it is a sort of projection. The underlying unobservable universe of quantum gravity is Lorentz-invariant, it is easy to retrieve, and it provides Lorentz-invariant concepts for 1. time, 2. worldlines, 3. space, 4. velocity, 5. fields and 6. gravity.
Category: Quantum Gravity and String Theory