18 citations · 45 across the 8 of their papers we have counts for
8 papers
From Holst to Carroll Gravity, a Hamiltonian point of view
J. Fernando Barbero G, Juan Margalef-Bentabol, Valle Varo +1
The Carrollian regime of gravity provides a useful ultrarelativistic framework for studying asymptotically flat spacetimes, horizon dynamics, and condensed matter systems. In this…
Spacetime symmetries and geometric diffusion
Marc Basquens, Antonio Lasanta, Emanuel Mompó +2
We examine relativistic diffusion through the frame and observer bundles associated with a Lorentzian manifold . Our focus is on spacetimes with a non-trivial isometry group…
Precise Image Generation on Current Noisy Quantum Computing Devices
Florian Rehm, Sofia Vallecorsa, Kerstin Borras +3
The Quantum Angle Generator (QAG) is a new full Quantum Machine Learning model designed to generate accurate images on current Noise Intermediate Scale (NISQ) Quantum devices. Vari…
The Covariant Phase Space of Gravity with Boundaries
Valle Varo
This thesis investigates how the metric and tetrad formulations of three gravitational field theories in manifolds with timelike boundaries within the covariant phase space program…
On the on-shell equivalence of general relativity and Holst theories with nonmetricity, torsion, and boundaries
J. Fernando Barbero G., Juan Margalef-Bentabol, Valle Varo +1
We study a generalization of the Holst action where we admit nonmetricity and torsion in manifolds with timelike boundaries (both in the metric and tetrad formalism). We prove that…
Three roads to the geometric constraint formulation of gravitational theories with boundaries
Fernando Barbero, Marc Basquens, Valle Varo +1
The Hamiltonian description of mechanical or field models defined by singular Lagrangians plays a central role in physics. A number of methods are known for this purpose, the most…
Palatini gravity with nonmetricity, torsion, and boundaries in metric and connection variables
Fernando Barbero G., Juan Margalef-Bentabol, Valle Varo +1
We prove the equivalence in the covariant phase space of the metric and connection formulations for Palatini gravity, with nonmetricity and torsion, on a spacetime manifold with bo…
Covariant phase space for gravity with boundaries: metric vs tetrad formulations
J. Fernando Barbero G., Juan Margalef-Bentabol, Valle Varo +1
We use covariant phase space methods to study the metric and tetrad formulations of General Relativity in a manifold with boundary and compare the results obtained in both approach…