Perfect fluid filled universe in odd dimensional pure Lovelock gravity

2020 ◽  
Vol 30 ◽  
pp. 100735
Author(s):  
Sudan Hansraj ◽  
Nomfundo Gabuza
Keyword(s):  
Perfect Fluid ◽  
Lovelock Gravity

scholarly journals Static and radiating solutions of Lovelock gravity in the presence of a perfect fluid

2009 ◽  
Vol 674 (4-5) ◽  
pp. 243-249 ◽  
Author(s):  
M.H. Dehghani ◽  
N. Farhangkhah
Keyword(s):  
Perfect Fluid ◽  
Lovelock Gravity

ON A PERFECT FLUID K¨ AHLER SPACETIME

2016 ◽  
Vol 12 (3) ◽  
pp. 4350-4355
Author(s):  
VIBHA SRIVASTAVA ◽  
P. N. PANDEY
Keyword(s):  
Field Equation ◽  
Perfect Fluid ◽  
Sectional Curvature ◽  
Einstein Field Equation ◽  
Cosmological Term ◽  
Conformal Killing ◽  
Killing Vectors ◽  
Projectively Flat ◽  
Conformal Killing Vectors

The object of the present paper is to study a perfect fluid K¨ahlerspacetime. A perfect fluid K¨ahler spacetime satisfying the Einstein field equation with a cosmological term has been studied and the existence of killingand conformal killing vectors have been discussed. Certain results related to sectional curvature for pseudo projectively flat perfect fluid K¨ahler spacetime have been obtained. Dust model for perfect fluid K¨ahler spacetime has also been studied.

Perfect fluid spacetimes and Yamabe solitons

2021 ◽  
Vol 62 (3) ◽  
pp. 032501
Author(s):  
U. C. De ◽  
S. K. Chaubey ◽  
S. Shenawy
Keyword(s):  
Perfect Fluid ◽  
Yamabe Solitons ◽  
Fluid Spacetimes

scholarly journals Derive Lovelock gravity from string theory in cosmological background

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Peng Wang ◽  
Houwen Wu ◽  
Haitang Yang ◽  
Shuxuan Ying
Keyword(s):  
String Theory ◽  
Effective Action ◽  
Strong Support ◽  
Effective Theory ◽  
Quadratic Term ◽  
Lovelock Gravity ◽  
Cosmological Background ◽  
Finite Term ◽  
Specific Dimension ◽  
Bonnet Term

Abstract It was proved more than three decades ago, that the first order α′ correction of string effective theory could be written as the Gauss-Bonnet term, which is the quadratic term of Lovelock gravity. In cosmological background, with an appropriate field redefinition, we reorganize the infinite α′ corrections of string effective action into a finite term expression for any specific dimension. This finite term expression matches Lovelock gravity exactly and thus fix the couplings of Lovelock gravity by the coefficients of string effective action. This result thus provides a strong support to string theory.

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