332 citations · 2k across the 60 of their papers we have counts for
13 papers · 1 filter
Spin response of neutron matter in ab initio approach
J. E. Sobczyk, W. Jiang, A. Roggero
We propose a general method embedded in the ab initio nuclear framework to reconstruct linear response functions and calculate sum rules. Within our approach, based on the Gaussian…
Restricted Boltzmann Machines Propagators for Auxiliary Field Diffusion Monte Carlo
Jordan M. R. Fox, Alessandro Lovato, Alessandro Roggero +1
The auxiliary field diffusion Monte Carlo method uses imaginary-time projection techniques to accurately solve the ground-state wave function of atomic nuclei and infinite nuclear…
Time Scales in Many-Body Fast Neutrino Flavor Conversion
Ramya Bhaskar, Alessandro Roggero, Martin J. Savage
Time scales associated with many-body fast neutrino flavor conversions in core-collapse supernova are explored in the context of an effective two-flavor model with axial symmetry.…
Quantum Monte Carlo in Configuration Space with Three-Nucleon Forces
Pierre Arthuis, Carlo Barbieri, Francesco Pederiva +1
Neutron matter, through its connection to neutron stars as well as systems like cold atom gases, is one of the most interesting yet computationally accessible systems in nuclear ph…
Spectral density reconstruction with Chebyshev polynomials
Joanna E. Sobczyk, Alessandro Roggero
Accurate calculations of the spectral density in a strongly correlated quantum many-body system are of fundamental importance to study its dynamics in the linear response regime. T…
Exact representations of many body interactions with RBM neural networks
Ermal Rrapaj, Alessandro Roggero
Restricted Boltzmann Machines (RBM) are simple statistical models defined on a bipartite graph which have been successfully used in studying more complicated many-body systems, bot…
Opportunities for Nuclear Physics & Quantum Information Science
Ian C. Cloët, Matthew R. Dietrich, John Arrington +23
This whitepaper is an outcome of the workshop Intersections between Nuclear Physics and Quantum Information held at Argonne National Laboratory on 28-30 March 2018 [www.phy.anl.gov…
Small Bits of Cold Dense Matter
Stefano Gandolfi, Joseph Carlson, Alessandro Roggero +2
The behavior of QCD at high baryon density and low temperature is crucial to understanding the properties of neutron stars and gravitational waves emitted during their mergers. In…
Ground-State Properties of He and O Extrapolated from Lattice QCD with Pionless EFT
L. Contessi, A. Lovato, F. Pederiva +3
We extend the prediction range of Pionless Effective Field Theory with an analysis of the ground state of O in leading order. To renormalize the theory, we use as input both…
Microscopically constrained mean field models from chiral nuclear thermodynamics
Ermal Rrapaj, Alessandro Roggero, Jeremy W. Holt
We explore the use of mean field models to approximate microscopic nuclear equations of state derived from chiral effective field theory across the densities and temperatures relev…
Constraining the nuclear energy density functional with quantum Monte Carlo calculations
Alessandro Roggero, Abhishek Mukherjee, Francesco Pederiva
We study the problem of an impurity in fully polarized (spin-up) low density neutron matter with the help of an accurate quantum Monte Carlo method in conjunction with a realistic…
Quantum Monte Carlo calculations of neutron matter with non-local chiral interactions
Alessandro Roggero, Abhishek Mukherjee, Francesco Pederiva
We present fully non-perturbative quantum Monte Carlo calculations with non-local chiral effective field theory (EFT) interactions for the ground state properties of neutron matter…
Quantum Monte Carlo with Coupled-Cluster wave functions
Alessandro Roggero, Abhishek Mukherjee, Francesco Pederiva
We introduce a novel many body method which combines two powerful many body techniques, viz., quantum Monte Carlo and coupled cluster theory. Coupled cluster wave functions are int…