Exploració per autor "Boronat Medico, Jordi"
Ara es mostren els items 90-106 de 106
-
Temperature dependence of the vacancy formation energy in solid 4He
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-09-01)
Article
Accés obertWe studied the thermal effects on the behavior of incommensurate solid 4He at low temperatures using the path integral Monte Carlo method. Below a certain temperature, depending on the density and the structure of the ... -
Temperature-induced miscibility of impurities in trapped Bose gases
(American Physical Society, 2024-04-16)
Article
Accés obertWe study the thermal properties of impurities embedded in a repulsive Bose gas under a harmonic trapping potential. In order to obtain the exact structural properties in this inhomogeneous many-body system, we resort to ... -
The limit of mechanical stability in quantum crystals: a diffusion Monte Carlo study of solid He-4
(2015-07-01)
Article
Accés obertWe present a first-principles study of the energy and elastic properties of solid helium at pressures below the range in which it is energetically stable. We find that the limit of mechanical stability in hcp He is bar, ... -
Towards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet
(American Physical Society, 2020-09-25)
Article
Accés obertSome discrepancies between experimental results on quantum droplets made of a mixture of 39K atoms in different hyperfine states and their analysis within extended Gross-Pitaevskii theory (which incorporates beyond mean-field ... -
Trapped Bose-Bose mixtures at finite temperature: a quantum Monte Carlo approach
(American Physical Society, 2020-12-04)
Article
Accés obertWe study thermal properties of a trapped Bose-Bose mixture in a dilute regime using quantum Monte Carlo methods. Our main aim is to investigate the dependence of the superfluid density and the condensate fraction on ... -
Two-dimensional mixture of dipolar fermions: Equation of state and magnetic phases
(American Physical Society (APS), 2019-04-08)
Article
Accés obertWe study a two-component mixture of fermionic dipoles in two dimensions at zero temperature, interacting via a purely repulsive 1/r3 potential. This model can be realized with ultracold atoms or molecules when their dipole ... -
Two-dimensional repulsive Fermi polarons with short- A nd long-range interactions
(American Physical Society (APS), 2019-08-09)
Article
Accés obertWe 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, ... -
Two-dimensional Spin-polarized hydrogen at zero temperature
(2013-06)
Article
Accés obertThe ground-state properties of spin polarized hydrogen H↓ in two dimensions (2D) are obtained by means of diffusion Monte Carlo calculations. Using the most accurate to date ab initio H↓–H↓ interatomic potential we have ... -
Ultradilute quantum liquid drops
(American Physical Society, 2018-04-05)
Article
Accés obertUsing quantum Monte Carlo methods we have studied dilute Bose-Bose mixtures with attractive interspecies interaction in the limit of zero temperature. The calculations are exact within some statistical noise and thus go ... -
Ultradilute quantum liquid of dipolar atoms in a bilayer
(American Institute of Physics (AIP), 2022-02-11)
Article
Accés obertWe show that ultradilute quantum liquids can be formed with ultracold bosonic dipolar atoms in a bilayer geometry. Contrary to previous realizations of ultradilute liquids, there is no need for stabilizing the system with ... -
Universality in molecular halo clusters
(2014-12-16)
Article
Accés obertThe ground state of weakly bound dimers and trimers with a radius extending well into the classically forbidden region is explored, with the goal to test the predicted universality of quantum halo states. The focus of the ... -
Universality in ultradilute liquid Bose-Bose mixtures
(American Physical Society (APS), 2019-02-13)
Article
Accés obertWe have studied dilute Bose-Bose mixtures of atoms with attractive interspecies and repulsive intraspecies interactions using quantum Monte Carlo methods at T=0. Using a number of models for interactions, we determine the ... -
Universality of size-energy ratio in four-body systems
(Nature, 2019-04-18)
Article
Accés obertUniversal relationship of scaled size and scaled energy, which was previously established for two- and three-body systems in their ground state, is examined for four-body systems, using Quantum Monte Carlo simulations. We ... -
Van der Waals five-body size-energy universality
(Nature, 2022-12-01)
Article
Accés obertA universal relationship between scaled size and scaled energy is explored in five-body self-bound quantum systems. The ground-state binding energy and structure properties are obtained by means of the diffusion Monte Carlo ... -
Zero-temperature phase diagram of D2 physisorbed on graphane
(Institute Of Physics Publishing Ltd, 2013-10-06)
Article
Accés restringit per política de l'editorialWe determined the zero-temperature phase diagram of D2 physisorbed on graphane using the diffusion Monte Carlo method. The substrate used was C-graphane, an allotropic form of the compound that has been experimentally ... -
Zero-temperature phase diagram of the second layer of 4He adsorbed on graphene
(2012-05-25)
Article
Accés obertThe phase diagram at zero temperature of 4He adsorbed on a helium incommensurate triangular solid on top of a single graphene sheet has been obtained using the diffusion Monte Carlo method. We have found that, in accordance ... -
Zero-temperature phase diagram of Yukawa bosons
(2012)
Article
Accés obertWe study the zero-temperature phase diagram of bosons interacting via screened Coulomb (Yukawa) potential by means of the diffusion Monte Carlo method. The Yukawa potential is used as a model interaction in the neutron ...
