• Anomalous Paths in Quantum Mechanical Path-Integrals 

      Grimsmo, Arne Løhre; Klauder, John R; Skagerstam, Bo-Sture (Journal article; Peer reviewed, 2013)
      We investigate modifications of the discrete-time lattice action, for a quantum mechanical particle in one spatial dimension, that vanish in the naïve continuum limit but which, nevertheless, induce nontrivial effects due ...
    • On dark atoms, massive dark photons and millicharged sub-components 

      Kahlhoefer, Felix; Urdshals, Einar (Peer reviewed; Journal article, 2020)
      We present a simple model of two dark matter species with opposite millicharge that can form electrically neutral bound states via the exchange of a massive dark photon. If bound state formation is suppressed at low ...
    • On the model-dependence of the relation between minimum-bias and inelastic proton-proton cross sections 

      Ostapchenko, Sergey (Peer reviewed; Journal article, 2011)
      The model-dependence of the relation between the inelastic and various minimum-bias proton–proton cross sections is analyzed, paying a special attention to the sensitivity of minimum-bias triggers to diffractive collisions. ...
    • QCD at finite isospin density: chiral perturbation theory confronts lattice data 

      Adhikari, Prabal; Andersen, Jens Oluf (Peer reviewed; Journal article, 2020)
      We consider the thermodynamics of three-flavor QCD in the pion-condensed phase at nonzero isospin chemical potential (μI) and vanishing temperature using chiral perturbation theory in the isospin limit. The transition from ...