Recent Submissions

  • Value regions of univalent self-maps with two boundary fixed points 

    Gumenyuk, Pavel; Prokhorov, Dmitri (Journal article; Peer reviewed, 2018)
    In this paper we find the exact value region V(z0,T) of the point evaluation functional f → f(z0) over the class of all holomorphic injective self-maps f : D → D of the unit disk D having a boundary regular fixed point at ...
  • Anomalous low-temperature thermodynamics of QCD in strong magnetic fields 

    Brauner, Tomas; Kadam, Saurabh (Journal article; Peer reviewed, 2017-11)
    The thermodynamics of quantum chromodynamics at low temperatures and in sufficiently strong magnetic fields is governed by neutral pions. We analyze the interacting system of neutral pions and photons at zero baryon chemical ...
  • Universal spacetimes in four dimensions 

    Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena (Journal article; Peer reviewed, 2017-10)
    Universal spacetimes are exact solutions to all higher-order theories of gravity. We study these spacetimes in four dimensions and provide necessary and sufficient conditions for universality for all Petrov types except ...
  • Exact Solutions of the Field Equations for Empty Space in the Nash Gravitational Theory 

    Aadne, Matthew Terje; Grøn, Øyvind (Journal article; Peer reviewed, 2017-02)
    John Nash has proposed a new theory of gravity. We define a Nash-tensor equal to the curvature tensor appearing in the Nash field equations for empty space, and calculate its components for two cases: 1. A static, spherically ...
  • On a class of integrable systems of Monge-Ampère type 

    Doubrov, Boris; Ferapontov, Eugene V.; Kruglikov, Boris; Novikov, Vladimir (Journal article; Peer reviewed, 2017-06)
    We investigate a class of multi-dimensional two-component systems of Monge-Ampère type that can be viewed as generalisations of heavenly type equations appearing in a self-dual Ricci-flat geometry. Based on the Jordan-Kronecker ...
  • Scattering amplitudes of massive Nambu-Goldstone bosons 

    Brauner, Tomas; Jakobsen, Martin Fonnum (Journal article; Peer reviewed, 2018-01)
    Massive Nambu-Goldstone (mNG) bosons are quasiparticles the gap of which is determined exactly by symmetry. They appear whenever a symmetry is broken spontaneously in the ground state of a quantum many-body system and at ...