Results 1 to 10 of about 464 (182)
Black hole solutions in mimetic Born-Infeld gravity [PDF]
European Physical Journal C: Particles and Fields, 2018 The vacuum, static, and spherically symmetric solutions in the mimetic Born-Infeld gravity are studied. The mimetic Born-Infeld gravity is a reformulation of the Eddington-inspired-Born-Infeld (EiBI) model under the mimetic approach.
Che-Yu Chen +2 more
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Mapping nonlinear gravity into General Relativity with nonlinear electrodynamics [PDF]
European Physical Journal C: Particles and Fields, 2018 We show that families of nonlinear gravity theories formulated in a metric-affine approach and coupled to a nonlinear theory of electrodynamics can be mapped into general relativity (GR) coupled to another nonlinear theory of electrodynamics. This allows
Victor I. Afonso +3 more
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Journal of High Energy PhysicsThe entropy of the supersymmetric D2-D4-P black hole comes at weak coupling from D2-brane strips stretched between parallel D4 branes and carrying momentum waves.
Iosif Bena, Raphaël Dulac
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c-Map for Born–Infeld theories
Physics Letters B, 2016 The c-map of four dimensional non-linear theories of electromagnetism is considered both in the rigid case and in its coupling to gravity. In this way theories with antisymmetric tensors and scalars are obtained, and the three non-linear representations ...
L. Andrianopoli +3 more
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Born–Infeld inspired modifications of gravity [PDF]
Physics Reports, 2018 General Relativity has shown an outstanding observational success in the scales where it has been directly tested. However, modifications have been intensively explored in the regimes where it seems either incomplete or signals its own limit of validity.
Gonzalo J Olmo, Diego Rubiera-Garcia
exaly +4 more sources
Emergence of non-linear electrodynamic theories from TT¯-like deformations
Physics Letters B, 2022 In this letter, we investigate the deformation of the ModMax theory, as a unique Lagrangian of non-linear electrodynamics preserving both conformal and electromagnetic-duality invariance, under TT¯-like flows. We will show that the deformed theory is the
H. Babaei-Aghbolagh +3 more
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Nonlinear electrodynamics without birefringence
Journal of High Energy Physics, 2023 All solutions of the no-birefringence conditions for nonlinear electrodynamics are found. In addition to the known Born-Infeld and Plebanski cases, we find a “reverse Born-Infeld” case, which has a limit to Plebanski, and an “extreme-Born-Infeld” case ...
Jorge G. Russo, Paul K. Townsend
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International Journal of Modern Physics A, 2000 We present a model for an inhomogeneous and anisotropic early universe filled with a nonlinear electromagnetic field of Born–Infeld (BI) type. The effects of the BI field are compared with the linear case (Maxwell). Since the curvature invariants are well behaved then we conjecture that our model does not present an initial big bang singularity.
García-Salcedo, Ricardo, Bretón, Nora
openaire +3 more sources
Born - Infeld - Einstein actions? [PDF]
Classical and Quantum Gravity, 1998 We present some obvious physical requirements on gravitational avatars of non-linear electrodynamics and illustrate them with explicit determinantal Born-Infeld-Einstein models. A related procedure, using compensating Weyl scalars, permits us to formulate conformally invariant versions of these systems as well.
Deser, S., Gibbons, G. W.
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Born–Infeld phantom gravastars [PDF]
Journal of Cosmology and Astroparticle Physics, 2006 We construct new gravitational vacuum star solutions with a Born-Infeld phantom replacing the de Sitter interior. The model allows for a wide range of masses and radii required by phenomenology, and can be motivated from low energy string theory.
Bilić, Neven +2 more
openaire +4 more sources