G-theory and its reduction to F(R)-gravity in FRW universe

2018 ◽  
Vol 15 (09) ◽  
pp. 1850144 ◽  
Author(s):  
Alireza Sepehri ◽  
Richard Pincak

A new theory, named G(General)-theory in 14 dimensions, has been proposed that is reduced to [Formula: see text]-gravity and produces the metric of FRW universe in four dimensions. In this theory, the Universe is born in six stages. First, there is nothing in the world. Then, two strings, one with positive energy and one with negative energy in 14th, dimension are created such that the sum over their energies is zero. These strings are excited and for flowing their energies, other dimensions are produced. Second, these strings decay to G0-branes. Third, these branes join each other and construct Gp-branes which tensor fields live on. The rank of these fields can change from zero to p for [Formula: see text] and from zero to six for [Formula: see text]. Four, by compacting Gp-branes on three circles, supersymmetry is born which contains the equal number of degrees of freedom for fermions and bosons. Six, by reducing G-theory to four dimensions, FRW universe is emerges and initial tensor fields produce the predicted shape of [Formula: see text]-gravity.

2018 ◽  
Vol 33 (10n11) ◽  
pp. 1850058
Author(s):  
Alireza Sepehri ◽  
Richard Pincak

In string theory with ten dimensions, all Dp-branes are constructed from D0-branes whose action has two-dimensional brackets of Lie 2-algebra. Also, in M-theory, with 11 dimensions, all Mp-branes are built from M0-branes whose action contains three-dimensional brackets of Lie 3-algebra. In these theories, the reason for difference between bosons and fermions is unclear and especially in M-theory there is not any stable object like stable M3-branes on which our universe would be formed on it and for this reason it cannot help us to explain cosmological events. For this reason, we construct G-theory with M dimensions whose branes are formed from G0-branes with N-dimensional brackets. In this theory, we assume that at the beginning there is nothing. Then, two energies, which differ in their signs only, emerge and produce 2M degrees of freedom. Each two degrees of freedom create a new dimension and then M dimensions emerge. M-N of these degrees of freedom are removed by symmetrically compacting half of M-N dimensions to produce Lie-N-algebra. In fact, each dimension produces a degree of freedom. Consequently, by compacting M-N dimensions from M dimensions, N dimensions and N degrees of freedom is emerged. These N degrees of freedoms produce Lie-N-algebra. During this compactification, some dimensions take extra i and are different from other dimensions, which are known as time coordinates. By this compactification, two types of branes, Gp and anti-Gp-branes, are produced and rank of tensor fields which live on them changes from zero to dimension of brane. The number of time coordinates, which are produced by negative energy in anti-Gp-branes, is more sensible to number of times in Gp-branes. These branes are compactified anti-symmetrically and then fermionic superpartners of bosonic fields emerge and supersymmetry is born. Some of gauge fields play the role of graviton and gravitino and produce the supergravity. The question may arise that what is the physical reason which shows that this theory is true. We shown that G-theory can be reduced to other theories like nonlinear gravity theories in four dimensions. Also, this theory, can explain the physical properties of fermions and bosons. On the other hand, this theory explains the origin of supersymmetry. For this reason, we can prove that this theory is true. By reducing the dimension of algebra to three and dimension of world to 11 and dimension of brane to four, G-theory is reduced to F(R)-gravity.


2015 ◽  
Vol 12 (03) ◽  
pp. 1550037 ◽  
Author(s):  
Carlos Castro

A Clifford-gravity-based model is exploited to build a generalized action (beyond the current ones used in the literature) and arrive at relevant numerical results which are consistent with the presently-observed de Sitter accelerating expansion of the universe driven by a very small vacuum energy density ρ obs ~ 10-120(MP)4 (MP is the Planck mass) and provide promising dark energy/matter candidates in terms of the 16 scalars corresponding to the degrees of freedom associated with a Cl (3, 1)-algebra-valued scalar field Φ in four dimensions.


2017 ◽  
Vol 32 (05) ◽  
pp. 1750033 ◽  
Author(s):  
Alireza Sepehri ◽  
Richard Pincak

Recently, Padmanabhan has discussed that the expansion of the cosmic space is due to the difference between the number of degrees of freedom on the boundary surface and the number of degrees of freedom in a bulk region. Now, a natural question arises that how these degrees of freedom emerged from nothing? We try to address this issue in a new theory which is more complete than M-theory and reduces to it with some limitations. In M-theory, there is no stable object like stable M3-branes that our universe is formed on it and for this reason cannot help us to explain cosmological events. In this research, we propose a new theory, named G-theory which could be the mother of M-theory and superstring theory. In G-theory, at the beginning, two types of G0-branes, one with positive energy and one with negative energy are produced from nothing in 14 dimensions. Then, these branes are compactified on three circles via two different ways (symmetrically and anti-symmetrically), and two bosonic and fermionic parts of action for M0-branes are produced. By joining M0-branes, supersymmetric Mp-branes are created which contain the equal number of degrees of freedom for fermions and bosons. Our universe is constructed on one of Mp-branes and other Mp-brane and extra energy play the role of bulk. By dissolving extra energy which is produced by compacting actions of Gp-branes, into our universe, the number of degrees of freedom on it and also its scale factor increase and universe expands. We test G-theory with observations and find that the magnitude of the slow-roll parameters and the tensor-to-scalar ratio in this model are very much smaller than one which are in agreement with predictions of experimental data. Finally, we consider the origin of the extended theories of gravity in G-theory and show that these theories could be anomaly free.


2020 ◽  
Author(s):  
Deep Bhattacharjee

‘Negative energy’ is one of those concepts which if can be detected physically then the most famous problem of physics can be solved that is ‘time travel’, as negative energy is used to keep the mouths of the wormholes opens without getting collapsed. Through mathematics, it has been possible to deduce the negative energy but in real life scenario, negative energy means ‘negative mass’ and ‘negative inertia’. And in principle ‘negative mass’ can be something which does not interact with ‘Higgs field’ as because in this case, the particle having the energy value ‘less than 0’ must lie under the hyperbolae of the spontaneous symmetry breaking during the acquirement of mass while the creation of particles. Generally to create a particles mass ‘Higgs field’ is necessary and to remove the Higgs field ‘per cubic centimeter of region approx’ the amount of energy needed is 10^40 joules which is far greater than the limit of energy the humans could achieved. Tachyon has been a hypothetical particles that can travel faster than light thereby having its origin below the ‘hyperbolae’ but it’s not experimentally verified. String theory or M-Theory having 6 Theories (Type I, type IIA, Type IIB, Heterotic SO(32), Heterotic (E8*E8), 11-dimensional SUGRA or Supersymmetric Gravity) contains open and closed strings. The open strings are particularly magnified in my paper as because it corresponds to a vibrations much alike a 1-dimensional wave where there is a certain resonant frequency in them. They are chaotic and the smallest part of every particles. Like electrons being a leptons consist of strings, Protons and Neutrons being a fermions’ contains up and down quarks which again consist of Strings much like the Gluons holding the two particles together forbidding the like charges of protons to repel due to ‘strong nuclear force’. A open string being its ends attached to D(p)-Branes is not allows to propagate in other dimensions, however, gravity (Graviton) being a closed string is not attached to D(p)-Branes thereby making a journey to ‘inter-dimensions’ where (p) in D(p) denotes the number of dimensions like 1,2,3,4 etcetera. It is however difficult to detect strings as because the Super symmetric (heavy) Particles need to be discovered first to make a journey for strings where Super Symmetry predicts heavier particles as that for every integer-spin bosons there is a half-integer spin fermions (for every graviton there is a Gravitino) and for every fermions there is a boson (like for every Photino there is a Photon). However these heavy particles will need more energy in the accelerators to get produced and so, sometimes the mass-gap in proton-proton collisions can be detected to predict these heavier particles which might be leaked to higher dimensions. Note, the unification of 4 fundamental forces provides a gateway of string theory with the 4 forces as (Strong nuclear force, weak Nuclear force, Gravitational force and electromagnetic force). And the required energy needed is 10^19 GeV, however the energy scale can be reduced to 1 TeV by increasing the number of additional spatial dimensions of ‘sub-millimeter’ sizes. Now, by considering a wave equation, and substituting it in Schrödinger equations by applying Klein-Gordon equations, it can be possible to make the Einstein relations of mass energy equivalence E=mc2 to the Plank-Einstein relations E=ℏω and finding out the eigenvalues from the equations as (-1 or +1) with a set of eigenvectors, and inputting it in the frequency of the strings, the most fundamental elements, along with the modified stress-energy momentum tensors, we can able to show that ‘not only negative energy exists at the very fundamental level but also negative energy implies a Schrodinger equations with a negative energy eigenvalues’ to pave the way for the impossible to achieve through mathematics. Apart from that it will be possible to exhibit the negative energy of the universe having the matrix Diag(+1,-1,-1,-1) with a positive energy and negative pressure to a Diag(-1,+1,+1,+1) with a negative energy and positive pressure where the ‘negative pressure will act as the Λ or the cosmological constant to repulse the force of gravity’ to the ‘positive pressure or the – Λ’ to make a way for a smooth Big Crunch, however we do not know whether ‘a universe with only a negative energy density’ can make a stable universe but from the conservation laws of the ‘Energy’ it can be assumed that ‘if there is negative energy in the universe, then there must be equal amount of positive energy in the universe to compensate for the negative energy’ making a stability in the laws of conservation of energy, along with an affine parameter ξ(-Λ) to prevent the annihilation process of the negative energy with the positive energy thereby making the universe safe for the fundamental particles inclusive and exclusive of the standard model. Also, faster than light travel is discussed with negative kinetic energy.


2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Wei Zhang ◽  
Xiao-Mei Kuang

We study the modified Friedmann equation in the Friedmann-Robertson-Walker universe with quantum effect. Our modified results mainly stem from the new entropy-area relation and the novel idea of Padmanabhan, who considers the cosmic space to be emerging as the cosmic time progresses, so that the expansion rate of the universe is determined by the difference of degrees of freedom between the holographic surface and the bulk inside. We also discuss the possibility of having bounce cosmological solution from the modified Friedmann equation in spatially flat geometry.


2020 ◽  
Vol 35 (1-2) ◽  
Author(s):  
Sachi Gupta ◽  
Sanjay Pathak

From ancient time, Agnihotra is a ritual to purify the environment using this method. This is a healing fire from the Vedic science of Ayurveda. The tremendous amount of energy during the fire is resonating and a magnetic field is produced that strengthens positive energy and prevents negative energy. People around the world have experienced Agnihotri’s power to reduce stress, clarity of mind and improvement in full health. Agnihotra, homa has significant effect on plant growth and development. Homa farming methods are used in different parts of the world to increase the yield and disease resistance of produce. When done regularly every day, it enables the atmosphere to receive cosmic energy from planetary bodies such as the sun and moon, which have a positive impact on humans, plants and animals, leading to good health, balanced environment and harmony.


Author(s):  
Claus Beisbart

Cosmological questions (e.g., how far the world extends and how it all began) have occupied humans for ages and given rise to numerous conjectures, both within and outside philosophy. To put to rest fruitless speculation, Kant argued that these questions move beyond the limits of human knowledge. This article begins with Kant’s doubts about cosmology and shows that his arguments presuppose unreasonably high standards on knowledge and unwarranted assumptions about space-time. As an analysis of the foundations of twentieth-century cosmology reveals, other worries about the discipline can be avoided too if the universe is modeled using Einstein’s general theory of relativity. There is now strong observational support for one particular model. However, due to underdetermination problems, the big cosmological questions cannot be fully answered using this model either. This opens the space for more speculative proposals again (e.g., that the universe is only part of a huge multiverse).


2018 ◽  
Vol 8 (1) ◽  
pp. 49-66
Author(s):  
Monika Szuba

The essay discusses selected poems from Thomas Hardy's vast body of poetry, focusing on representations of the self and the world. Employing Maurice Merleau-Ponty's concepts such as the body-subject, wild being, flesh, and reversibility, the essay offers an analysis of Hardy's poems in the light of phenomenological philosophy. It argues that far from demonstrating ‘cosmic indifference’, Hardy's poetry offers a sympathetic vision of interrelations governing the universe. The attunement with voices of the Earth foregrounded in the poems enables the self's entanglement in the flesh of the world, a chiasmatic intertwining of beings inserted between the leaves of the world. The relation of the self with the world is established through the act of perception, mainly visual and aural, when the body becomes intertwined with the world, thus resulting in a powerful welding. Such moments of vision are brief and elusive, which enhances a sense of transitoriness, and, yet, they are also timeless as the self becomes immersed in the experience. As time is a recurrent theme in Hardy's poetry, this essay discusses it in the context of dwelling, the provisionality of which is demonstrated in the prevalent sense of temporality, marked by seasons and birdsong, which underline the rhythms of the world.


2017 ◽  
Vol 9 (3) ◽  
pp. 17-30
Author(s):  
Kelly James Clark

In Branden Thornhill-Miller and Peter Millican’s challenging and provocative essay, we hear a considerably longer, more scholarly and less melodic rendition of John Lennon’s catchy tune—without religion, or at least without first-order supernaturalisms (the kinds of religion we find in the world), there’d be significantly less intra-group violence. First-order supernaturalist beliefs, as defined by Thornhill-Miller and Peter Millican (hereafter M&M), are “beliefs that claim unique authority for some particular religious tradition in preference to all others” (3). According to M&M, first-order supernaturalist beliefs are exclusivist, dogmatic, empirically unsupported, and irrational. Moreover, again according to M&M, we have perfectly natural explanations of the causes that underlie such beliefs (they seem to conceive of such natural explanations as debunking explanations). They then make a case for second-order supernaturalism, “which maintains that the universe in general, and the religious sensitivities of humanity in particular, have been formed by supernatural powers working through natural processes” (3). Second-order supernaturalism is a kind of theism, more closely akin to deism than, say, Christianity or Buddhism. It is, as such, universal (according to contemporary psychology of religion), empirically supported (according to philosophy in the form of the Fine-Tuning Argument), and beneficial (and so justified pragmatically). With respect to its pragmatic value, second-order supernaturalism, according to M&M, gets the good(s) of religion (cooperation, trust, etc) without its bad(s) (conflict and violence). Second-order supernaturalism is thus rational (and possibly true) and inconducive to violence. In this paper, I will examine just one small but important part of M&M’s argument: the claim that (first-order) religion is a primary motivator of violence and that its elimination would eliminate or curtail a great deal of violence in the world. Imagine, they say, no religion, too.Janusz Salamon offers a friendly extension or clarification of M&M’s second-order theism, one that I think, with emendations, has promise. He argues that the core of first-order religions, the belief that Ultimate Reality is the Ultimate Good (agatheism), is rational (agreeing that their particular claims are not) and, if widely conceded and endorsed by adherents of first-order religions, would reduce conflict in the world.While I favor the virtue of intellectual humility endorsed in both papers, I will argue contra M&M that (a) belief in first-order religion is not a primary motivator of conflict and violence (and so eliminating first-order religion won’t reduce violence). Second, partly contra Salamon, who I think is half right (but not half wrong), I will argue that (b) the religious resources for compassion can and should come from within both the particular (often exclusivist) and the universal (agatheistic) aspects of religious beliefs. Finally, I will argue that (c) both are guilty, as I am, of the philosopher’s obsession with belief. 


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