scholarly journals Magnetic brane solutions of Lovelock gravity with nonlinear electrodynamics

2015 ◽  
Vol 91 (8) ◽  
Author(s):  
Seyed Hossein Hendi ◽  
Behzad Eslam Panah ◽  
Shahram Panahiyan
Keyword(s):  
Nonlinear Electrodynamics ◽  
Lovelock Gravity

BIonic system: Extraction of Lovelock gravity from a Born–Infeld-type theory

2018 ◽  
Vol 15 (02) ◽  
pp. 1850029
Author(s):  
Yaghoob Naimi ◽  
Alireza Sepehri ◽  
Tooraj Ghaffary ◽  
Hossein Ghaforyan ◽  
Majid Ebrahimzadeh
Keyword(s):  
Black Holes ◽  
String Theory ◽  
Type Theory ◽  
Close Relation ◽  
Nonlinear Electrodynamics ◽  
Lovelock Gravity ◽  
Exponential Form ◽  
Gravity Changes ◽  
Gauge Gravity ◽  
M Theory

It was shown that both Lovelock gravity and Born–Infeld (BI) electrodynamics can be obtained from low effective limit of string theory. Motivated by the mentioned unique origin of the gauge-gravity theories, we are going to find a close relation between them. In this research, we start from the Lagrangian of a BI-type nonlinear electrodynamics with an exponential form to extract the action of Lovelock gravity. We investigate the origin of Lovelock gravity in a system of branes which are connected with each other by different wormholes through a BIonic system. These wormholes are produced as due to the nonlinear electrodynamics which are emerged on the interacting branes. By approaching branes, wormholes dissolve into branes and Lovelock gravity is generated. Also, throats of some wormholes become smaller than their horizons and they transit to black holes. Generalizing calculations to M-theory, it is found that by compacting Mp-branes, Lovelock gravity changes to nonlinear electrodynamics and thus both of them have the same origin. This result is consistent with the prediction of BIonic model in string theory.

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.

Pulsar radiation in post-Maxwellian vacuum nonlinear electrodynamics

2016 ◽  
Vol 94 (4) ◽  
Author(s):  
V. I. Denisov ◽  
B. N. Shvilkin ◽  
V. A. Sokolov ◽  
M. I. Vasili’ev
Keyword(s):  
Nonlinear Electrodynamics ◽  
Pulsar Radiation ◽  
Vacuum Nonlinear Electrodynamics

scholarly journals New approach to duality-invariant nonlinear electrodynamics

2013 ◽  
Vol 474 ◽  
pp. 012023 ◽  
Author(s):  
E Ivanov ◽  
O Lechtenfeld ◽  
B Zupnik
Keyword(s):  
Nonlinear Electrodynamics ◽  
New Approach

COSMOLOGICAL EFFECTS OF NONLINEAR ELECTRODYNAMICS

2005 ◽  
Vol 20 (11) ◽  
pp. 2421-2430 ◽  
Author(s):  
M. NOVELLO
Keyword(s):  
Nonlinear Electrodynamics ◽  
Global Properties ◽  
The Universe

We present some consequences induced by nonlinear electrodynamics on the global properties of the universe.

scholarly journals Conformal tensors via Lovelock gravity

2013 ◽  
Vol 30 (19) ◽  
pp. 195006 ◽  
Author(s):  
David Kastor
Keyword(s):  
Lovelock Gravity
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