Blar i Institutt for fysikk på tidsskrift "Physics Letters B"
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Anomalous Paths in Quantum Mechanical Path-Integrals
(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
(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
(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
(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 ...