5 papers · 1 filter
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 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…
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…