Now showing items 25-36 of 309

    • Towards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet 

      Cikojevic, Viktor; Vranješ Markic, Leandra; Pi Pericay, Martí; Barranco Gómez, Manuel; Boronat Medico, Jordi (American Physical Society, 2020-09-25)
      Article
      Open Access
      Some 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 ...
    • High-frequency contactless characterization of 2D materials. Graphene, WS2 

      Arcos Gutiérrez, David; Nuño Gómez, Daniel-Juan; Ametller Congost, Lluís; Ferrer Anglada, Núria (2020-12)
      Article
      Restricted access - publisher's policy
      The electrical conductivity of two-dimensional (2D) materials without any electrical contact can be obtained using two different methods: the terahertz time domain spectroscopy (THz-TDS) method, in the range from GHz up ...
    • Detecting topology through dynamics in interacting fermionic wires 

      Haller, Andreas; Massignan, Pietro Alberto; Rizzi, Mateo (American Physical Society, 2020-08-05)
      Article
      Open Access
      Probing the topological invariants of interacting systems stands as a grand and open challenge. Here we describe a dynamical method to characterize 1D chiral models, based on the direct observation of time-evolving bulk ...
    • Two-dimensional topological quantum walks in the momentum space of structured light 

      Massignan, Pietro Alberto; D'Errico, Alessio; Cardano, Filippo; Maffei, Maria; dauphin, Alexandre; Esposito, Chiara; Piccirillo, Bruno; Marrucci, Lorenzo; Lewenstein, Maciej; Barboza, Raouf (Optical Society of American (OSA), 2020-02-20)
      Article
      Open Access
      Quantum walks are powerful tools for quantum applications and for designing topological systems. Although they are simulated in a variety of platforms, genuine two-dimensional realizations are still challenging. Here we ...
    • Beyond Lee-Huang-Yang description of self-bound Bose mixtures 

      Ota, Miki; Astrakharchik, Grigori (2020-08-18)
      Article
      Open Access
      We investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the ...
    • Solvation dynamics in water: 4: on the initial regime of solvation relaxation 

      Rey Oriol, Rosendo; Hynes, James T. (2020-09-03)
      Article
      Open Access
      It is shown, by means of numerical and analytic work, that initial molecular momenta play little significant role in the initial fast solvation relaxation that follows electronic excitation of, and charge creation for, a ...
    • Influence of cholesterol on the orientation of the farnesylated GTP-bound KRas-4B binding with anionic model membranes 

      Huixia, Lu; Martí Rabassa, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-22)
      Article
      Open Access
      The Ras family of proteins is tethered to the inner leaflet of the cell membranes which plays an essential role in signal transduction pathways that promote cellular proliferation, survival, growth, and differentiation. ...
    • Long-lasting salt bridges provide the anchoring mechanism of oncogenic kirsten rat sarcoma proteins at cell membranes 

      Huixia, Lu; Martí Rabassa, Jordi (2020-11-10)
      Article
      Restricted access - publisher's policy
      RAS proteins work as GDP-GTP binary switches and regulate cytoplasmic signaling networks that are able to control several cellular processes, playing an essential role in signal transduction pathways involved in cell growth, ...
    • Few-body bound states of two-dimensional bosons 

      Guijarro Gámez, Grecia; Astrakharchik, Grigori; Boronat Medico, Jordi; Bazak, Betzalel; Petrov, D. S. (American Physical Society (APS), 2020-04-07)
      Article
      Open Access
      We study clusters of the type $A_NB_M$ with N=M=3 in a two-dimensional mixture of A and B bosons, with attractive AB and equally repulsive AA and BB interactions. In order to check universal aspects of the problem, we ...
    • The dynamics of digits: calculating Pi with Galperin's billiards 

      Aretxabaleta, Xabier M.; Gonchenko, Marina; Harshman, Nathan L.; Jackson, Steven Glenn; Olshanii, Maxim; Astrakharchik, Grigori (Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-01)
      Article
      Open Access
      In Galperin billiards, two balls colliding with a hard wall form an analog calculator for the digits of the number p . This classical, one-dimensional three-body system (counting the hard wall) calculates the digits of p ...
    • Efficient recursive Adams–Bashforth methods in molecular dynamics simulations of N-body systems interacting through pairwise potentials 

      Martí Rabassa, Jordi; Díaz, Bernat (2020-09-09)
      Article
      Open Access
      A recursive multistep Adams–Bashforth method applied to the Molecular Dynamics simulations of N-body systems interacting through pairwise force fields is introduced and analysed. Equations of motion are obtained using a ...
    • Solvation structure and dynamics of the dimethylammonium cation diluted in liquid water: a molecular dynamics approach 

      Skarmoutsos, Ioannis; Guàrdia Manuel, Elvira (American Institute of Physics (AIP), 2020-06-21)
      Article
      Open Access
      Classical molecular dynamics simulation techniques were employed to investigate the local solvation structure and related dynamics of the dimethylammonium cation diluted in liquid water at ambient conditions. The translational ...