231 citations · 2k across the 107 of their papers we have counts for
7 papers · 1 filter
Hilbert series and higher-order Lagrangians for the model
Johan Bijnens, Sven Bjarke Gudnason, Jiahui Yu +1
We compare the Hilbert series approach with explicit constructions of higher-order Lagrangians for the nonlinear sigma model. We use the Hilbert series to find the number an…
Neutron stars and phase diagram from a double hard-wall
Lorenzo Bartolini, Sven Bjarke Gudnason, Josef Leutgeb +1
Description of nuclear matter in the core of neutron stars eludes the main tools of investigation of QCD, such as perturbation theory and the lattice formulation of the theory. Rec…
Symmetry energy in holographic QCD
Lorenzo Bartolini, Sven Bjarke Gudnason
We study the symmetry energy (SE), an important quantity in nuclear physics, in the Witten-Sakai-Sugimoto model and in a much simpler hard-wall model of holographic QCD. The SE is…
Near-BPS Skyrmions
Sven Bjarke Gudnason, Marco Barsanti, Stefano Bolognesi
We consider the Skyrme model in the near-BPS limit. The BPS part is made of the sextic term plus a potential and the deformation is made of the standard massive Skyrme model contro…
Nineteen vortex equations and integrability
Sven Bjarke Gudnason
The class of five integrable vortex equations discussed recently by Manton is extended so it includes the relativistic BPS Chern-Simons vortices, yielding a total of nineteen vorte…
Neutron stars and phase diagram in a hard-wall AdS/QCD model
Lorenzo Bartolini, Sven Bjarke Gudnason, Josef Leutgeb +1
We study the phase diagram of (large-) QCD using a simplistic holographic hard-wall model with a dynamical scalar field and a homogeneous Ansatz representing a smeared instant…
A Smörgåsbord of Skyrmions
Sven Bjarke Gudnason, Chris Halcrow
We study static solutions of the standard Skyrme model with a pion mass. Using approximately pseudo-random initial configurations made of single Skyrmions in the non-symmetr…