scholarly journals Emergence of Warm Inflation in Curved Space-Time between Accelerating Branes

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Aroonkumar Beesham
Keyword(s):  
Extra Dimensions ◽  
Orbital Motion ◽  
Radial Distance ◽  
Standard Case ◽  
Curved Space ◽  
Warm Inflation ◽  
Thermal Distribution ◽  
Slow Roll ◽  
Perturbation Parameters ◽  
Interesting System

It appears that having our own brane to somehow interact with other branes could give rise to quite an interesting system and that interaction could lead to some observable effects. We consider the question of whether or not these signatures of interaction between the branes can be observed. To answer this question, we investigate the effect induced by the inflaton in the WMAP7 data using the warm inflationary model. In this model, slow-roll and perturbation parameters are given in terms of the inflaton thermal distribution. We show that this distribution depends on the orbital radius of the brane motion under the interaction potential of other branes in extra dimensions. Thus, an enhancement in the brane inflation can be a signature of an orbital motion in extra dimensions, and consequently, some signals of other branes can be detected by observational data. According to experimental data, the N≃50 case leads to ns≃0.96, where N and ns are the number of e-folds and the spectral index, respectively. This standard case may be found in the range 0.01<Rtensor‐scalar<0.22, where Rtensor‐scalar is the tensor-scalar ratio. We find that at this point, the radial distance between our brane and another brane is R=1.5 GeV−1 in intermediate and R=0.02225 GeV−1 in logamediate inflation.

scholarly journals The effects of quantum spectrum of 4 + n-dimensional water around a DNA on pure water in four dimensional universe

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 831-838
Author(s):  
Massimo Fioranelli ◽  
Alireza Sepehri ◽  
Maria Grazia Roccia ◽  
Mahdieh Ghasemi
Keyword(s):  
String Theory ◽  
Extra Dimension ◽  
Extra Dimensions ◽  
Pure Water ◽  
Space Time ◽  
Dimensional Manifold ◽  
Curved Space ◽  
Open Strings ◽  
Long Time ◽  
Quantum Spectrum

Abstract Recently, a method for calculating the quantum spectrum of black holes has been proposed. We show that this method can be applied for radiations of 4 + n - dimensional water around a DNA. In this model, DNA acts like a black hole and produces a curved space-time in a water around it. In these conditions, molecules of water in four dimensional universe are entangled with some DNA-like structures in extra dimension. Consequently, the effects of structures of water in extra dimensions can be observed in four dimensions. The entangled structures emit some quantum spectrum which can be transmitted to pure waters. These waves produce a curved space-time in pure water and make an entanglement between structure of water on four and DNA-like structures in extra dimensions. As a result, some signatures of DNAs can be observed in pure water. This model helps us to understand the reason for the emergence of life on the earth. To explain the model better, we unify Darwin’s theory with string theory in a new Darwinian’s string theory. In this theory, a zero dimensional manifold decays into two types of closed strings. One type decays into open strings and then these strings join to each other and form cosmos. Another type decays into open strings which form biological matters like DNAs and molecules of water in universe and anti-DNAs and anti-water in anti-universe. Thus, DNAs and molecules water are connected to each other and anti-DNAs and molecules of anti-water in anti-universe through some closed strings. These strings helps to molecules of water to store their informations in extra dimension and have long time memory. Because, information that are transformed into extra dimensions through closed strings, could be returned into universe. Also, these closed strings could have the main role in DNA transduction. Because, they connect two tubes one including water and DNA and another pure water in universe to two tubes including anti-DNA and water in anti-universe and transform properties of DNA into pure water. As a result, Darwinian string theory can confirm both water memory and DNA transduction. Finally, this theory response to this question that why memory of water couldnt remain for a long time. In this model, open strings which connects atoms in universe with anti-atoms in anti-universe interact with open strings which connects molecules of water and anti-water and decrease their entanglement. This causes that exchanging information between water and anti-water decreases and memory is dis-appeared.

scholarly journals INFLATON POTENTIAL RECONSTRUCTION AND GENERALIZED EQUATIONS OF STATE

1995 ◽  
Vol 10 (27) ◽  
pp. 1977-1988 ◽  
Author(s):  
G. MANGANO ◽  
G. MIELE ◽  
C. STORNAIOLO
Keyword(s):  
Equations Of State ◽  
Previous Analysis ◽  
Density Perturbation ◽  
Generalized Equations ◽  
Zeroth Order ◽  
New Approach ◽  
Slow Roll ◽  
Chaotic Model ◽  
Perturbation Parameters ◽  
The Universe

We extend a previous analysis concerning cosmological fluids with generalized equations of state in order to study inflationary scenarios. In the framework of the slow-roll approximation we find the expressions for the perturbation parameters ε, η and the density perturbation spectra in terms of the adiabatic index γ(a) as a function of the universe scale factor. This connection allows one to find straightforwardly γ(a) corresponding, for example, to the simplest chaotic model and to the Harrison-Zeldovich potential and shows its capability to be applied to more complicated situations. Finally, we use this description to develop a new approach to the early universe dynamics, based on a 1/N expansion, where N is the e-fold number. To this end, we introduce a set of suitable dimensionless variables and show that at the zeroth order in /1N, an improved slow-roll approximation is obtained.

4 + n -dimensional Topoisomerase-like Waves

2018 ◽  
Author(s):  
Alireza Sepehri
Keyword(s):  
Extra Dimensions ◽  
Dimensional Space ◽  
Space Time ◽  
Dimensional Manifold ◽  
Curved Space ◽  
New Model ◽  
Exchange Information ◽  
Dimensional Space Time ◽  
Dimensional Object

In this paper, we propose a new model which allows to consider all evolutions of DNA from viewpoint of an observer on 11-dimensional manifold. In this model, DNA is an 4 + n-dimensional object in 11 dimensional space-time which is compacted to 4-dimensional manifold. This leads to the emergence of a curved space-time around DNA and production of some new waves. To exchange information between DNAs, it is needed that waves play the role of topoisomerases in extra dimensions. These topoisomerase-like waves open packings of DNA, read it&rsquo;s information and compact it again. The shape and properties of these waves are completely different from gravitational and electromagnetic ones. By reducing dimensions from 11 to 4, the topoisomerase-like waves obtain the properties of known fields like gravitons and photons.

scholarly journals Power density spectra of modes of orbital motion in strongly curved space–time: obtaining the observable signal

2014 ◽  
Vol 439 (2) ◽  
pp. 1933-1939 ◽  
Author(s):  
P. Bakala ◽  
G. Török ◽  
V. Karas ◽  
M. Dovčiak ◽  
M. Wildner ◽  
...  
Keyword(s):  
Power Density ◽  
Orbital Motion ◽  
Space Time ◽  
Curved Space

scholarly journals Pre-inflation dynamical behavior of warm inflation in loop quantum cosmology

2020 ◽  
Vol 35 (35) ◽  
pp. 2050293
Author(s):  
Kui Xiao ◽  
Sheng-Qin Wang
Keyword(s):  
Quantum Cosmology ◽  
Initial Conditions ◽  
Dynamical Behavior ◽  
Loop Quantum Cosmology ◽  
Warm Inflation ◽  
Dynamical Behaviors ◽  
Slow Roll ◽  
Dissipative Coefficient ◽  
Slow Roll Inflation ◽  
Three Phases

Considering a constant dissipative coefficient [Formula: see text], the pre-inflation dynamical behaviors of warm inflation in the loop quantum cosmology scenario are discussed. We consider three sets of initial conditions. The evolution of the background can always be divided into three phases, namely super-inflation, damping, and slow-roll inflation phases, with the duration of each phase depending on the initial conditions. As an example, we compare the background evolution between [Formula: see text] and [Formula: see text] under special initial conditions and find that there is no slow-roll inflation phase for [Formula: see text] while the number of e-folds is about 60.209 for [Formula: see text].

scholarly journals ASPECTS OF WARM-FLAT DIRECTIONS

2010 ◽  
Vol 25 (22) ◽  
pp. 4221-4237 ◽  
Author(s):  
TOMOHIRO MATSUDA
Keyword(s):  
Thermal Equilibrium ◽  
Strong Interactions ◽  
Cosmological Perturbations ◽  
Inflaton Field ◽  
Warm Inflation ◽  
Qualitative And Quantitative ◽  
Slow Roll ◽  
Dissipative Coefficient ◽  
Inflation Scenario

Considering the mechanism of dissipative slow-roll that has been used in warm inflation scenario, we show that dissipation may alter usual cosmological scenarios associated with SUSY-flat directions. We mainly consider SUSY-flat directions that have strong interactions with nonflat directions and may cause strong dissipation both in thermal and nonthermal backgrounds. An example is the Affleck–Dine mechanism in which dissipation may create significant (both qualitative and quantitative) discrepancies between the conventional scenario and the dissipative one. We also discuss several mechanisms of generating curvature perturbations in which the dissipative field, which is distinguished from the inflaton field, can be used as the source of cosmological perturbations. Considering the Morikawa–Sasaki dissipative coefficient, the damping caused by the dissipation may be significant for many MSSM flat directions even if the dissipation is far from thermal equilibrium.

Shaft potential inspired warm inflation

2017 ◽  
Vol 14 (06) ◽  
pp. 1750088 ◽  
Author(s):  
Abdul Jawad ◽  
Amara Ilyas ◽  
Sarfraz Ahmad
Keyword(s):  
Scalar Field ◽  
Spectral Index ◽  
Power Spectra ◽  
Spectral Indices ◽  
Tensor Power ◽  
Planck Data ◽  
Warm Inflation ◽  
Slow Roll ◽  
Scalar Spectral Index ◽  
Inflationary Parameters

We discuss the warm inflation in the presence of shaft potential [Formula: see text], tachyon scalar field and the generalized form of dissipative coefficient [Formula: see text]. In this respect, we investigate the inflationary parameters (slow-roll parameters, number of e-folds, scalar-tensor power spectra, spectral indices, tensor-to-scalar ratio and running of scalar spectral index) in both strong and weak dissipative regimes. It is interesting to mention that our inflationary parametric results (tensor-scalar ratio, spectral index and running of spectral) are consistent with the recent observational data such as BICEP[Formula: see text], WMAP[Formula: see text] and latest Planck data.

Inflation and primordial perturbations

2018 ◽  
Author(s):  
Michele Maggiore
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Large Field ◽  
Inflationary Cosmology ◽  
Small Field ◽  
Quantum Field ◽  
Curved Space ◽  
Slow Roll ◽  
Starobinsky Model ◽  
Single Field

Review of inflationary cosmology. Single-field slow-roll inflation. Large-field inflation and small-field inflation. Starobinsky model. Quantum field theory in curved space. Generation of primordial perturbations during inflation. Mukhanov-Sasaki equation. Scalar and tensor perturbations.

4 + n -dimensional Topoisomerase-like Waves

2018 ◽  
Author(s):  
Alireza Sepehri
Keyword(s):  
Extra Dimensions ◽  
Dimensional Space ◽  
Space Time ◽  
Dimensional Manifold ◽  
Curved Space ◽  
New Model ◽  
Exchange Information ◽  
Dimensional Space Time ◽  
Dimensional Object

In this paper, we propose a new model which allows to consider all evolutions of DNA from viewpoint of an observer on 11-dimensional manifold. In this model, DNA is an 4 + n-dimensional object in 11 dimensional space-time which is compacted to 4-dimensional manifold. This leads to the emergence of a curved space-time around DNA and production of some new waves. To exchange information between DNAs, it is needed that waves play the role of topoisomerases in extra dimensions. These topoisomerase-like waves open packings of DNA, read it&rsquo;s information and compact it again. The shape and properties of these waves are completely different from gravitational and electromagnetic ones. By reducing dimensions from 11 to 4, the topoisomerase-like waves obtain the properties of known fields like gravitons and photons.

4 + n -dimensional Topoisomerase-like Waves

2018 ◽  
Author(s):  
Alireza Sepehri
Keyword(s):  
Extra Dimensions ◽  
Dimensional Space ◽  
Space Time ◽  
Dimensional Manifold ◽  
Curved Space ◽  
New Model ◽  
Exchange Information ◽  
Dimensional Space Time ◽  
Dimensional Object

In this paper, we propose a new model which allows to consider all evolutions of DNA from viewpoint of an observer on 11-dimensional manifold. In this model, DNA is an 4 + n-dimensional object in 11 dimensional space-time which is compacted to 4-dimensional manifold. This leads to the emergence of a curved space-time around DNA and production of some new waves. To exchange information between DNAs, it is needed that waves play the role of topoisomerases in extra dimensions. These topoisomerase-like waves open packings of DNA, read it&rsquo;s information and compact it again. The shape and properties of these waves are completely different from gravitational and electromagnetic ones. By reducing dimensions from 11 to 4, the topoisomerase-like waves obtain the properties of known fields like gravitons and photons.

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