498 citations · 1.5k across the 29 of their papers we have counts for
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Testing general covariance in effective models motivated by Loop Quantum Gravity
Juan Carlos Del Águila, Hugo A. Morales
In this work we introduce a criterion for testing general covariance in effective quantum gravity theories. It adapts the analysis of invariance under general spacetime diffeomorph…
Cosmological constraints for a two brane-world system with single equation of state
Juan L. Perez, Ruben Cordero, L. Arturo Urena-Lopez
We present the study of two 3-brane system embedded in a 5-dimensional space-time in which the fifth dimension is compactified on a orbifold. Assuming isotropic, homo…
High-order quantum back-reaction and quantum cosmology with a positive cosmological constant
Martin Bojowald, David Brizuela, Hector H. Hernandez +2
When quantum back-reaction by fluctuations, correlations and higher moments of a state becomes strong, semiclassical quantum mechanics resembles a dynamical system with a high-dime…
On Loop Quantum Gravity Phenomenology and the Issue of Lorentz Invariance
Martin Bojowald, Hugo A. Morales-Tecotl, Hanno Sahlmann
A simple model is constructed which allows to compute modified dispersion relations with effects from loop quantum gravity. Different quantization choices can be realized and their…
On alternative approaches to Lorentz violation in loop quantum gravity inspired models
Jorge Alfaro, Marat Reyes, Hugo A. Morales-Tecotl +1
Recent claims point out that possible violations of Lorentz symmetry appearing in some semiclassical models of extended matter dynamics motivated by loop quantum gravity can be rem…
Cosmological applications of loop quantum gravity
Martin Bojowald, Hugo A. Morales-Tecotl
After a brief introduction to classical and quantum gravity we discuss applications of loop quantum gravity in the cosmological realm. This includes the basic formalism and recent…
Quantum gravity corrections to neutrino propagation
Jorge Alfaro, Hugo A. Morales-Tecotl, Luis F. Urrutia
Massive spin-1/2 fields are studied in the framework of loop quantum gravity by considering a state approximating, at a length scale much greater than Planck length $\ell_…
Fermion mass gap in the loop representation of quantum gravity
Merced Montesinos-Velasquez, Hugo A. Morales-Tecotl, Tonatiuh Matos
An essential step towards the identification of a fermion mass generation mechanism at Planck scale is to analyse massive fermions in a given quantum gravity framework. In this let…
Essential self-adjointness in one-loop quantum cosmology
Giampiero Esposito, Hugo A. Morales-Tecotl, Luis O. Pimentel
The quantization of closed cosmologies makes it necessary to study squared Dirac operators on closed intervals and the corresponding quantum amplitudes. This paper proves self-adjo…
Boundary Terms for Massless Fermionic Fields
Giampiero Esposito, Hugo A. Morales-Tecotl, Giuseppe Pollifrone
Local supersymmetry leads to boundary conditions for fermionic fields in one-loop quantum cosmology involving the Euclidean normal to the boundary and a pair of independent spinor…
Self-Dual Action for Fermionic Fields and Gravitation
Hugo A. Morales-Tecotl, Giampiero Esposito
This paper studies the self-dual Einstein-Dirac theory. A generalization is obtained of the Jacobson-Smolin proof of the equivalence between the self-dual and Palatini purely gravi…
Fermions in Quantum Gravity
H A Marales-Tecotl, C Rovelli
We study the quantum fermions+gravity system, that is, the gravitational counterpart of QED. We start from the standard Einstein-Weyl theory, reformulated in terms of Ashtekar vari…