[PDF] Top 20 Infinite derivative gravity:a ghost and singularity free theory
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Infinite derivative gravity:a ghost and singularity free theory
... remarkable theory has withstood the enormous advancements in experimental physics and observational data - with each new discovery adding further weight to this colossus of scientific ...Einstein’s gravity ... See full document
146
Criteria for resolving the cosmological singularity in Infinite Derivative Gravity around expanding backgrounds
... higher derivative terms into a gravitational ac- tion, such as Stelle’s 4th derivative theory [4], faltered due to the Ostrogradsky instability ...finite derivative theories of gravity ... See full document
6
Revealing infinite derivative gravity's true potential:The weak field limit around de Sitter backgrounds
... that ghost-free Infinite Derivative Gravity (IDG) produces a non-singular potential around a dS background, while returning to the GR prediction at large ...apparently infinite ... See full document
6
Defocusing of null rays in infinite derivative gravity
... General theory of relativity permits spacetime singularities, where null geodesic congruences focus in the presence of matter, which satisfies an appropriate energy ...an infinite derivative ... See full document
11
Gravitational radiation in infinite derivative gravity and connections to effective quantum gravity
... modify gravity by altering the action failed because they gen- erated ghosts, which are excitations with negative ki- netic energy ...[3]. Infinite Derivative Gravity (IDG) [4–32] avoids this ... See full document
7
On aspects of infinite derivatives field theories & infinite derivative gravity
... higher derivative theory of gravity is given by [53] where the action contains infinite derivatives acting on the ...having infinite derivatives can cure the singularity problem ... See full document
224
Newtonian potential and geodesic completeness in infinite derivative gravity
... Stelle’s theory, while perturbatively renor- malizable [11], suffers from the introduction of ghosts - physical excitations, characterised by negative kinetic en- ergy ...the theory can not be said to be ... See full document
8
UV completion of the Starobinsky model, tensor to scalar ratio, and constraints on nonlocality
... studying ghost-free infinite derivative gravity (IDG) was to resolve the cosmological big bang singularity problem in Einstein ’ s theory of gravity, by supplanting ... See full document
7
Infinite Derivative Gravity:a finite number of predictions
... of gravity at short distances without introducing ...underlying theory of ...the singularity problem because we would still need a full theory of quantum gravity to describe ... See full document
138
Uninvited guest in mixed derivative Hořava gravity
... a ghost, effective field theory wisdom suggests that its mass can be made to be heavy enough such that the instability is never reached within the regime of validity of the IR approxi- ...field ... See full document
12
Derivative Free Multilevel Optimization
... based derivative-free multilevel optimization ...Keywords: Derivative-free optimization; multilevel optimization; shape optimization; trust-region ... See full document
15
New Basic Theory of Gravity
... of gravity is the cornerstone of many disciplines in space technology, as- tronomy and cosmology, but so far no acceptable theory to explain its peculiarities is ...suitable theory should include, or ... See full document
11
Inflation with light Weyl ghost
... interacting ghost may be not so dangerous if we are considering the only e ff ective description of the ...and ghost may be moved to the time much larger than the Universe ...extra ghost degrees of ... See full document
9
Paradoxes of the Theory of Gravity
... After the approval of Newton's found that some of the bodies shrink uncontrollably and "collapsing" from their surroundings. Vortex the fact that ether cannot penetrate with a density of nucleons. influence of ... See full document
6
No-ghost theorem for the fourth-order derivative Pais-Uhlenbeck oscillator model
... Such a situation is not unprecedented in physics. For instance, on quantizing the orbital angular momentum L ~ ~r p, one finds not only integer spin representations and ~ their associated spherical harmonics, but also ... See full document
5
A singularity theorem for Einstein-Klein-Gordon theory
... of singularity theorems in ...Hawking-type singularity theorem using methods taken from [10] and then apply it to the Einstein–Klein–Gordon theory with or without additional matter using our ... See full document
25
Quantum Nonlocality from Higher-Derivative Gravity
... Abstract: A classical origin for the Bohmian quantum potential, as that potential term arises in the quantum mechanical treatment of black holes and Einstein-Rosen (ER) bridges, can be based on 4th-order extensions of ... See full document
12
A Methodology for Filtering and Inversion of Gravity Data: An Example of Application to the Determination of the Moho Undulation in Morocco
... known, gravity anomalies on a regular grid is required for filter- ing by means of the FFT ...the gravity data set consisting of point data anomalies distributed randomly, we need to interpolate these data ... See full document
11
Singularity Free Superstar as an Alternative to Black Hole and Gravastar
... and singularity (infinite in- teracting energy) at infinite density, respectively, based on the uncertainty ...below infinite density, extreme force fields are short- range, and located in ... See full document
6
The Singularity Problem in Gravitational Theory. The Spherically Symmetric Case
... the singularity issue, but apparently are not able to achieve this goal in general; as we will discuss, some regular solutions can be found, but there is no ...general theory, nding some sucient (though not ... See full document
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