Accelerated higher-dimensional cosmology with a traversable static wormhole and a big rip

2010 ◽  
Vol 43 (1) ◽  
pp. 261-268 ◽  
Author(s):  
Ahmad Rami El-Nabulsi
Keyword(s):  
Big Rip ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional

HIGHER DIMENSIONAL COSMOLOGY WITH STRING VACUUM ENERGY

1987 ◽  
Vol 02 (05) ◽  
pp. 299-306 ◽  
Author(s):  
H. NISHIMURA ◽  
M. TABUSE
Keyword(s):  
String Theory ◽  
Vacuum Energy ◽  
Bosonic String ◽  
Extra Space ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional ◽  
Bosonic String Theory ◽  
The One ◽  
Closed Bosonic String

We consider higher dimensional cosmology based on the closed bosonic string theory with the one-loop vacuum energy. It is concluded that the winding-effect of strings around tori has a chance to prevent the extra space from expanding, even though the curvature of torus is zero.

PHASE TRANSITIONS IN HIGHER DIMENSIONAL COSMOLOGY

2010 ◽  
Vol 25 (01) ◽  
pp. 113-122
Author(s):  
RIZWAN UL HAQ ANSARI ◽  
P. K. SURESH
Keyword(s):  
Phase Transitions ◽  
Early Universe ◽  
Higher Dimensions ◽  
Temperature Dependent ◽  
Loop Correction ◽  
Massive Scalar Field ◽  
Five Dimensions ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional ◽  
The One

We have considered five-dimensional massive scalar field coupled to gravity and evaluated the one-loop effective potential in higher dimensions. It is demonstrated that nonminimally coupled φ4 theory can be regularized in five dimensions. Temperature dependent one-loop correction and critical temperature βc are computed. The phase transitions in the early universe depend on the space–time curvature R and scalar gravitational coupling ξ. A brief discussion of symmetry restoration is also presented and the nature of phase transitions in the early universe is found to be of second order.

scholarly journals HIGHER DIMENSIONAL COSMOLOGY: RELATIONS AMONG THE RADII OF TWO HOMOGENEOUS SPACES

2011 ◽  
Vol 26 (11) ◽  
pp. 805-814 ◽  
Author(s):  
E. A. LEÓN ◽  
R. NÚÑEZ-LÓPEZ ◽  
A. LIPOVKA ◽  
J. A. NIETO
Keyword(s):  
Cosmological Model ◽  
Homogeneous Space ◽  
Homogeneous Spaces ◽  
General Analysis ◽  
Field Equations ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional ◽  
Friedmann Robertson Walker

We study a cosmological model in (1+D+d) dimensions where D dimensions are associated with the usual Friedmann–Robertson–Walker type metric with radio a(t) and d dimensions corresponds to an additional homogeneous space with radio b(t). We make a general analysis of the field equations and then we obtain solutions involving the two cosmological radii, a(t) and b(t). The particular case D = 3, d = 1 is studied in some detail.

scholarly journals Primordial nucleosynthesis in higher dimensional cosmology

2009 ◽  
Vol 5 (S268) ◽  
pp. 39-40
Author(s):  
S. Chatterjee
Keyword(s):  
Early Universe ◽  
Primordial Nucleosynthesis ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional

AbstractWe investigate nucleosynthesis and element formation in the early universe in the framework of higher dimensional cosmology. We find that temperature decays less rapidly in higher dimensional cosmology, which we believe may have nontrivial consequences vis-a-vis primordial physics.

scholarly journals Interacting ghost dark energy models in the higher dimensional cosmology

2016 ◽  
Vol 25 (14) ◽  
pp. 1650108 ◽  
Author(s):  
J. Sadeghi ◽  
M. Khurshudyan ◽  
H. Farahani
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Equation Of State ◽  
Eos Parameter ◽  
Barotropic Fluid ◽  
Ghost Dark Energy ◽  
Energy Models ◽  
Higher Dimensional Cosmology ◽  
Higher Dimensional ◽  
Interaction Term

We investigate interacting ghost dark energy models in higher dimensional cosmology. We attempt to model dark matter within a barotropic fluid with [Formula: see text]. In this work, we consider four different models based on choosing equation of state (EoS) parameter and interaction term. We confirm that our models agree with observational data.

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