145 citations · 2.1k across the 96 of their papers we have counts for
6 papers · 1 filter
Extending general covariance: Moyal-type noncommutative manifolds
Martin Bojowald, Suddhasattwa Brahma, Umut Buyukcam +1
In the Hamiltonian formulation of general relativity, Einstein's equation is replaced by a set of four constraints. Classically, the constraints can be identified with the generato…
Covariance in self dual inhomogeneous models of effective quantum geometry: Spherical symmetry and Gowdy systems
Jibril Ben Achour, Suddhasattwa Brahma
When applying the techniques of Loop Quantum Gravity (LQG) to symmetry-reduced gravitational systems, one first regularizes the scalar constraint using holonomy corrections, prior…
Klein-Gordon field from the XXZ Heisenberg model
Jakub Bilski, Suddhasattwa Brahma, Antonino Marcianò +1
We examine the recently introduced idea of Spin-Field Correspondence focusing on the example of the spin system described by the XXZ Heisenberg model with external magnetic field.…
Quantum coordinate operators: why space-time lattice is fuzzy
Suddhasattwa Brahma, Antonino Marcianò, Michele Ronco
Working within the framework of Loop Quantum Gravity (LQG), we construct a set of three operators suitable for identifying coordinate-like quantities on a spin-network configuratio…
Quantum Reduced Loop Gravity with matter: eigenvectors of the Hamiltonian operator in isotropic cosmology
Jakub Bilski, Antonino Marciano
Introducing a new method, we demonstrate how the action of reduced operators can be derived without resorting to a recoupling theory and how they exactly reproduce the results obta…
Comment on "New variables for 1+1 dimensional gravity"
Martin Bojowald, Suddhasattwa Brahma, Juan D. Reyes
The results reported by Gambini, Pullin and Rastgoo in (2010 Class. Quantum Grav. 27 025002) are special cases of a general treatment of canonical variables for dilaton gravity mod…