41 citations · 121 across the 21 of their papers we have counts for
21 papers
Black holes in effective loop quantum gravity: Hawking radiation
Idrus Husin Belfaqih, Martin Bojowald, Suddhasattwa Brahma +1
Emergent modified gravity provides a covariant framework for holonomy effects in models of loop quantum gravity with consistent black hole solutions coupled to a scalar field. Seve…
Hamiltonian gravity with fermions
Erick I. Duque
Fermions are coupled to the Einstein-Cartan system in the canonical formulation, including the cosmological, the Barbero-Immirzi, and the non-minimal coupling constants. The result…
Hamiltonian gravity in tetrad-connection variables
Erick I. Duque
A systematic Hamiltonian formulation of the Einstein-Cartan system, based on the Hilbert-Palatini action with the Barbero-Immirzi and cosmological constants, is performed using the…
Emergent field theory
Erick I. Duque
The uniqueness theorems for general relativity and Yang-Mills theories can be circumvented by dropping the ubiquitous, yet often implicit, assumption that physical fields, such as…
Perturbative emergent modified gravity on cosmological backgrounds: Kinematics
Martin Bojowald, Manuel Diaz, Erick I. Duque
Emergent modified gravity has shown that the canonical formulation of general relativity gives rise to a larger class of covariant modifications than action-based approaches, so fa…
Singularities in loop quantum cosmology
Martin Bojowald, Manuel Diaz, Erick I. Duque
Quantum effects are expected to modify the cosmological dynamics of the early universe while maintaining some (potentially discrete) notion of space-time structure. In one approach…
Hawking evaporation and the fate of black holes in loop quantum gravity
Idrus Husin Belfaqih, Martin Bojowald, Suddhasattwa Brahma +1
A recent covariant formulation, that includes non-perturbative effects from loop quantum gravity (LQG) as self-consistent effective models, has revealed the possibility of non-sing…
Covariant LTB collapse in models of loop quantum gravity
Martin Bojowald, Erick I. Duque, Dennis Hartmann
Models of gravitational collapse provide important means to test whether non-classical space-time effects motivated for instance by quantum gravity can be realized in generic ways…
Lessons for loop quantum gravity from emergent modified gravity
Idrus Husin Belfaqih, Martin Bojowald, Suddhasattwa Brahma +1
Most of the potential physical effects of loop quantum gravity have been derived in effective models that modify the constraints of canonical general relativity in specific forms.…
Hypersurface deformations
Martin Bojowald, Erick I. Duque, Aiden Shah
Deformations of spacelike hypersurfaces in space-time play an important role in discussions of general covariance and slicing independence in gravitational theories. In a canonical…
Scalar quasinormal modes in emergent modified gravity
Martin Bojowald, Erick I. Duque, S. Shankaranarayanan
Emergent modified gravity is a post-Einsteinian gravitational theory where spacetime geometry is not fundamental but rather emerges from the gravitational degrees of freedom in a n…
Emergent modified gravity: Polarized Gowdy model on a torus
Martin Bojowald, Erick I. Duque
New covariant theories of emergent modified gravity exist not only in spherically symmetric models, as previously found, but also in polarized Gowdy systems that have a local propa…
Black holes in effective loop quantum gravity: Covariant holonomy modifications
Idrus Husin Belfaqih, Martin Bojowald, Suddhasattwa Brahma +1
Emergent modified gravity provides a covariant, effective framework for obtaining spherically symmetric black hole solutions in models of loop quantum gravity with scale-dependent…
Emergent electromagnetism
Erick I. Duque
We introduce the concept of emergent electric field. This is distinguished from the fundamental one in that the emergent electric field directly appears in observations through the…
Emergent Modified Gravity
Martin Bojowald, Erick I. Duque
A complete canonical formulation of general covariance makes it possible to construct new modified theories of gravity that are not of higher-curvature form, as shown here in a sph…
Inequivalence of mimetic gravity with models of loop quantum gravity
Martin Bojowald, Erick I. Duque
Certain versions of mimetic gravity have recently been claimed to present potential covariant theories of canonically modified spherically symmetric gravity, motivated by ingredien…
A new type of large-scale signature change in emergent modified gravity
Martin Bojowald, Erick I. Duque, Dennis Hartmann
Emergent modified gravity presents a new class of gravitational theories in which the structure of space-time with Riemannian geometry of a certain signature is not presupposed. Re…
Emergent modified gravity coupled to scalar matter
Martin Bojowald, Erick I. Duque
Emergent modified gravity presents a new set of generally covariant gravitational theories in which the space-time metric is not directly given by one of the fundamental fields. A…
Emergent modified gravity: The perfect fluid and gravitational collapse
Erick I. Duque
Emergent modified gravity is a canonical theory based on general covariance where the spacetime is not fundamental, but rather an emergent object. This feature allows for modificat…
MONDified Gravity
Martin Bojowald, Erick I. Duque
A new class of modified gravity theories, made possible by subtle features of the canonical formulation of general covariance, naturally allows MOND-like behavior (MOdified Newtoni…
Emergent modified gravity: Covariance regained
Martin Bojowald, Erick I. Duque
In its canonical formulation, general relativity is subject to gauge transformations that are equivalent to space-time coordinate changes of general covariance only when the gauge…