Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Mazzanti, Ferran"'
Autor:
Langen, Tim, Boronat, Jordi, Sánchez-Baena, Juan, Bombín, Raúl, Karman, Tijs, Mazzanti, Ferran
We simulate a molecular Bose-Einstein condensate in the strongly dipolar regime, observing the existence of self-bound droplets, as well as their splitting into multiple droplets by confinement-induced frustration. Our quantum Monte Carlo approach go
Externí odkaz:
http://arxiv.org/abs/2407.09391
Publikováno v:
Physical Review A 109 033312 (2024)
We present a quantum Monte Carlo based density functional to describe droplet formation and supersolidity in dipolar systems. The usual Lee-Huang-Yang term, accounting for quantum correlations in the conventional extended Gross-Pitaievskii equation (
Externí odkaz:
http://arxiv.org/abs/2311.04597
Publikováno v:
J. S\'anchez-Baena, L. A. Pe\~na Ardila, G. E. Astrakharchik, and F. Mazzanti, Phys. Rev. A 110, 023317 (2024)
We study the quasiparticle properties of a dipolar impurity immersed in a two-dimensional dipolar bath. We use the ab-initio Diffusion Monte Carlo technique to determine the polaron energy, effective mass and quasiparticle residue. We find that both
Externí odkaz:
http://arxiv.org/abs/2305.19846
Future fusion nuclear reactors will produce sustainable energy form the fusion of deuterium and tritium. In order to do so, the reactors will need to produce their own tritium through the neutron bombardment of lithium. Such reaction will produce tri
Externí odkaz:
http://arxiv.org/abs/2304.00293
Publikováno v:
Phys. Rev. A 108, 033303 (2023)
We investigate the phases of a Bose-Einstein condensate of dipolar atoms restricted to move in a two-dimensional plane. The dipole moments are all aligned in a direction tilted with respect to the plane normal. As a result of the attractive and repul
Externí odkaz:
http://arxiv.org/abs/2208.05028
Time-dependent variational Monte Carlo study of the dynamic response of bosons in an optical lattice
Publikováno v:
SciPost Phys. 13, 025 (2022)
We study the dynamics of a one-dimensional Bose gas at unit filling in both shallow and deep optical lattices and obtain the dynamic structure factor ${S(k,\omega)}$ by monitoring the linear response to a weak probe pulse. We introduce a new procedur
Externí odkaz:
http://arxiv.org/abs/2202.07535
Autor:
Mazzanti, Ferran, Romero, Enrique
Probabilistic models based on Restricted Boltzmann Machines (RBMs) imply the evaluation of normalized Boltzmann factors, which in turn require from the evaluation of the partition function Z. The exact evaluation of Z, though, becomes a forbiddingly
Externí odkaz:
http://arxiv.org/abs/2007.11926
Publikováno v:
Phys. Rev. A 102, 047302 (2020)
This is a Reply to the Comment from F. Cinti and M. Boninsegni on our recent work on the Berezinskii-Kosterlitz-Thouless (BKT) phase transition in a two-dimensional dipolar system [R.Bomb\'in, F. Mazzanti and J. Boronat, Physical Review A 100, 063614
Externí odkaz:
http://arxiv.org/abs/2007.01746
Publikováno v:
Physical Review A 100, 063614 (2019)
A two-dimensional quantum system of dipoles, with a polarization angle not perpendicular to the plane, shows a transition from a gas to a stripe phase. We have studied the thermal properties of these two phases using the path integral Monte Carlo (PI
Externí odkaz:
http://arxiv.org/abs/1912.04279
Autor:
Bombín, Raúl, Comparin, Tommaso, Bertaina, Gianluca, Mazzanti, Ferran, Giorgini, Stefano, Boronat, Jordi
Publikováno v:
Phys. Rev. A 100, 023608 (2019)
We study the repulsive polaron problem in a two-component two-dimensional system of fermionic atoms. We use two different interaction models: a short-range (hard-disk) potential and a dipolar potential. In our approach, all the atoms have the same ma
Externí odkaz:
http://arxiv.org/abs/1905.10125