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pro vyhledávání: '"Schmitt Andreas"'
Cold and dense matter may break rotational symmetry spontaneously and thus form an anisotropic phase in the interior of neutron stars. We consider the concrete example of an anisotropic chiral condensate in the form of a chiral density wave. Employin
Externí odkaz:
http://arxiv.org/abs/2411.08023
Autor:
Kovensky, Nicolas, Schmitt, Andreas
The holographic Witten-Sakai-Sugimoto model is often employed to describe strongly-coupled baryonic and isospin-asymmetric matter, for example in the context of neutron stars. Here we consider the case of vanishing baryon chemical potential, where de
Externí odkaz:
http://arxiv.org/abs/2407.12641
Autor:
Streeck, Robert, Gellert, Torsten, Schmitt, Andreas, Dipkaya, Asya, Fux, Vladimir, Januschowski, Tim, Berthold, Timo
In automated decision making processes in the online fashion industry, the 'predict-then-optimize' paradigm is frequently applied, particularly for markdown pricing strategies. This typically involves a mixed-integer optimization step, which is cruci
Externí odkaz:
http://arxiv.org/abs/2404.02996
Publikováno v:
EPJ Web of Conferences, Vol 270, p 00023 (2022)
We review the results of a phenomenological model for cold and dense nuclear matter exhibiting a chiral phase transition. The idea is to model the quark-hadron phase transition under neutron star conditions within a single model, but without adding q
Externí odkaz:
https://doaj.org/article/ce37bfb45ca44347a13f92684c516137
Autor:
Evans, Geraint W., Schmitt, Andreas
Chiral perturbation theory predicts the chiral anomaly to induce a so-called Chiral Soliton Lattice at sufficiently large magnetic fields and baryon chemical potentials. This state breaks translational invariance in the direction of the magnetic fiel
Externí odkaz:
http://arxiv.org/abs/2311.03880
Autor:
Pitsinigkos, Savvas, Schmitt, Andreas
We employ a model based on nucleonic and mesonic degrees of freedom to discuss the competition between isotropic and anisotropic phases in cold and dense matter. Assuming isotropy, the model exhibits a chiral phase transition which is of second order
Externí odkaz:
http://arxiv.org/abs/2309.01603
We improve the holographic description of isospin-asymmetric baryonic matter within the Witten-Sakai-Sugimoto model by accounting for a realistic pion mass, computing the pion condensate dynamically, and including rho meson condensation by allowing t
Externí odkaz:
http://arxiv.org/abs/2302.10675
Autor:
Haber Alexander, Schmitt Andreas
Publikováno v:
EPJ Web of Conferences, Vol 137, p 09003 (2017)
It is expected that in the interior of compact stars a proton superconductor coexists with and couples to a neutron superfluid. Starting from a field-theoretical model for two complex scalar fields – one of which is electrically charged – we deri
Externí odkaz:
https://doaj.org/article/3041066decfd44b8bb377b5c2b7e3002