86 citations · 501 across the 20 of their papers we have counts for
20 papers
Coarse-grained models for loop quantum gravity and their renormalization
Mehdi Assanioussi, Martin Zeiß
We introduce a family of effective theories and use them to define a specific type of coarse-grained models for canonical loop quantum gravity. Each effective theory is characteriz…
On the non-commutativity of geometric observables in different Lorentz frames
Mehdi Assanioussi, Jerzy Kowalski-Glikman, Ilkka Mäkinen +1
Our aim is to establish whether geometric observables, such as length, area or volume of a physical object, viewed by different observers Poisson commute or not. To illustrate this…
Elementary blocks of Loop Quantum Gravity
Mehdi Assanioussi, Etera R. Livine
We embark on the vast program of integrating the dynamics of Loop Quantum Gravity (LQG). Adopting the strategy of decomposing spin network states into small blocks of (quantum) geo…
On the covariant formulation of gauge theories with boundaries
Mehdi Assanioussi, Jerzy Kowalski-Glikman, Ilkka Mäkinen +1
In the present article, we review the classical covariant formulation of Yang-Mills theory and general relativity in the presence of spacetime boundaries, focusing mainly on the de…
Loop representation and r-Fock measures for gauge theories
Mehdi Assanioussi, Jerzy Lewandowski
In this article we continue the work on translating elements of the perturbative quantum field theory defined on Minkowski spacetime into the background independent framework of Lo…
Loop effective model for Schwarzschild black hole interior: a modified dynamics
Mehdi Assanioussi, Lisa Mickel
In this article, we introduce a new effective model for the Kantowski-Sachs spacetime in the context of loop quantum gravity, and we use it to evaluate departures from general rela…
Hopf link volume simplicity constraints in spin foam models
Mehdi Assanioussi, Benjamin Bahr
In this article we consider specific bivector geometries which arise in the large-spin limit of the extension of the Engle-Pereira-Rovelli-Livine spin foam model for quantum gravit…
Graph coherent states for loop quantum gravity
Mehdi Assanioussi
In this article we further investigate the construction of graph coherent states, first introduced in [1], in the context of loop quantum gravity. We specifically investigate the p…
Thermal quantum gravity condensates in group field theory cosmology
Mehdi Assanioussi, Isha Kotecha
The condensate cosmology programme of group field theory has produced several interesting results. The key idea is in the suggestion that a macroscopic homogeneous spacetime can be…
Thermal representations in group field theory: squeezed vacua and quantum gravity condensates
Mehdi Assanioussi, Isha Kotecha
We apply the formalism of thermofield dynamics to group field theory quantum gravity and construct thermal representations associated with generalised equilibrium Gibbs states usin…
Perspectives on the dynamics in a loop quantum gravity effective description of black hole interiors
Mehdi Assanioussi, Andrea Dapor, Klaus Liegener
In the loop quantum gravity context, there have been numerous proposals to quantize the reduced phase space of a black hole, and develop a classical effective description for its i…
Emergent de Sitter epoch of the Loop Quantum Cosmos: a detailed analysis
Mehdi Assanioussi, Andrea Dapor, Klaus Liegener +1
We present a detailed analysis of a quantum model for Loop Quantum Cosmology based on strict application of the Thiemann regularization algorithm for the Hamiltonian in Loop Quantu…
On the polymer quantization of connection theories: graph coherent states
Mehdi Assanioussi
We present the construction of a new family of coherent states for quantum theories of connections obtained following the polymer quantization. The realization of these coherent st…
Emergent de Sitter epoch of the quantum Cosmos
Mehdi Assanioussi, Andrea Dapor, Klaus Liegener +1
The quantum nature of the Big Bang is reexamined in the framework of Loop Quantum Cosmology. The strict application of a regularization procedure to the Hamiltonian, originally dev…
Time evolution in deparametrized models of loop quantum gravity
Mehdi Assanioussi, Jerzy Lewandowski, Ilkka Mäkinen
An important aspect in understanding the dynamics in the context of deparametrized models of LQG is to obtain a sufficient control on the quantum evolution generated by a given Ham…
Rainbow metric from quantum gravity: anisotropic cosmology
Mehdi Assanioussi, Andrea Dapor
In this paper we present a construction of effective cosmological models which describe the propagation of a massive quantum scalar field on a quantum anisotropic cosmological spac…
New scalar constraint operator for loop quantum gravity
Mehdi Assanioussi, Jerzy Lewandowski, Ilkka Mäkinen
We present a concrete and explicit construction of a new scalar constraint operator for loop quantum gravity. The operator is defined on the recently introduced space of partially…
Hamiltonian operator for loop quantum gravity coupled to a scalar field
Emanuele Alesci, Mehdi Assanioussi, Jerzy Lewandowski +1
We present the construction of a physical Hamiltonian operator in the deparametrized model of loop quantum gravity coupled to a free scalar field. This construction is based on the…
Rainbow metric from quantum gravity
Mehdi Assanioussi, Andrea Dapor, Jerzy Lewandowski
In this letter, we describe a general mechanism for emergence of a rainbow metric from a quantum cosmological model. This idea is based on QFT on a quantum space-time. Under genera…
A curvature operator for LQG
Emanuele Alesci, Mehdi Assanioussi, Jerzy Lewandowski
We introduce a new operator in Loop Quantum Gravity - the 3D curvature operator - related to the 3-dimensional scalar curvature. The construction is based on Regge Calculus. We def…