137 citations · 231 across the 8 of their papers we have counts for
8 papers
WKB Approximation for the Polymer Quantization of the Taub Model
Valerio Cascioli, Giovanni Montani, Riccardo Moriconi
We develop a suitable technical algorithm to implement a separation of the Minisuperspace configurational variables into quasi-classical and purely quantum degrees of freedom, in t…
High-dimensional Bayesian optimization using low-dimensional feature spaces
Riccardo Moriconi, Marc P. Deisenroth, K. S. Sesh Kumar
Bayesian optimization (BO) is a powerful approach for seeking the global optimum of expensive black-box functions and has proven successful for fine tuning hyper-parameters of mach…
Bianchi I model as a prototype for a cyclical Universe
Giovanni Montani, Andrea Marchi, Riccardo Moriconi
We analyze the dynamics of the Bianchi I model in the presence of stiff matter, an ultrarelativistic component and a small negative cosmological constant. We quantize this model in…
The reparameterization trick for acquisition functions
James T. Wilson, Riccardo Moriconi, Frank Hutter +1
Bayesian optimization is a sample-efficient approach to solving global optimization problems. Along with a surrogate model, this approach relies on theoretically motivated value he…
Behavior of the Universe anisotropy in a big-bounce cosmology
Riccardo Moriconi, Giovanni Montani
We investigate the classical and quantum behavior of a Bianchi I model in the presence of a stiff matter contribution when the Vilenkin interpretation of the wave function of the U…
Big-bounce cosmology from quantum gravity: The case of a cyclical Bianchi I universe
Riccardo Moriconi, Giovanni Montani, Salvatore Capozziello
We analyse the classical and quantum dynamics of a Bianchi I model in the presence of a small negative cosmological constant characterizing its evolution in term of the dust-time d…
Safe Learning of Regions of Attraction for Uncertain, Nonlinear Systems with Gaussian Processes
Felix Berkenkamp, Riccardo Moriconi, Angela P. Schoellig +1
Control theory can provide useful insights into the properties of controlled, dynamic systems. One important property of nonlinear systems is the region of attraction (ROA), a safe…
Chaos Removal in the gravity: the Mixmaster model
Riccardo Moriconi, Giovanni Montani, Salvatore Capozziello
We study the asymptotic dynamics of the Mixmaster Universe, near the cosmological singularity, considering gravity up to a quadratic corrections in the Ricci scalar . The…