Theoretical particle physics

  • Article
    | Open Access

    Tensor network simulations of lattice gauge theories may overcome the limitations of the Monte Carlo approach, but results have been limited to 1+1 and 2+1 dimensions so far. Here, the authors report a tree-tensor-based numerical study of a 3+1d truncated U(1) lattice gauge theory with fermionic matter.

    • Giuseppe Magnifico
    • , Timo Felser
    •  & Simone Montangero
  • Article
    | Open Access

    Brownian motion of biomolecules and colloidal particles near solid walls is expected to be rather different from that in bulk, but the details have been highly controversial. Here, Huang and Szlufarska show a general breakdown of traditional no-slip boundary conditions at short timescales that clarifies the controversy.

    • Kai Huang
    •  & Izabela Szlufarska
  • Article
    | Open Access

    Skyrmions—magnetic vortices with an additional twist—have only been observed in a small number of chiral magnets, all with specific non-centrosymmetric structure. Here, the authors suggest that skyrmions can be found in many frustrated magnets as long as they meet a specific set of criteria.

    • A. O. Leonov
    •  & M. Mostovoy
  • Article
    | Open Access

    Bloch oscillations consist of periodic spreading and relocalization of particle wave functions, but have been so far observed only in separable states. Here the authors observe them for two-photon N00N states in integrated photonic circuits, revealing transitions from particle bunching to anitbunching.

    • Maxime Lebugle
    • , Markus Gräfe
    •  & Alexander Szameit
  • Article
    | Open Access

    Various approaches based on the iterative search have failed in the deterministic creation of bandgaps in random networks. Here Yu et al. reveal a deterministic pathway to bandgaps in random-walk potentials by applying the notion of supersymmetry to the wave equation.

    • Sunkyu Yu
    • , Xianji Piao
    •  & Namkyoo Park
  • Article
    | Open Access

    The Giant Pairing Vibration is a collective mode in an atomic nucleus caused by coherence between particle-particle excitations, which has so far eluded detection. Cappuzzello et al. present signatures for its existence via heavy-ion-induced two-neutron transfer reactions in carbon nuclei.

    • F. Cappuzzello
    • , D. Carbone
    •  & A. Vitturi
  • Article
    | Open Access

    The measurement of the total cross-section of proton–proton collisions is of fundamental importance for particle physics. Here, the first measurement of the inelastic cross-section is presented for proton–proton collisions at an energy of 7 teraelectronvolts using the ATLAS detector at the Large Hadron Collider.

    • G. Aad
    • , B. Abbott
    •  & L. Zwalinski