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- Helmholtz Institute JenaDE407 papers
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119 papers · 1 filter
Degree of mobility for metrics of lorentzian signature and parallel (0,2)-tensor fields on cone manifolds
Aleksandra Fedorova, Vladimir S. Matveev
Degree of mobility of a (pseudo-Riemannian) metric is the dimension of the space of metrics geodesically equivalent to it. We describe all possible values of the degree of mobility…
Many-flavor Phase Diagram of the (2+1)d Gross-Neveu Model at Finite Temperature
Daniel D. Scherer, Jens Braun, Holger Gies
We study the phase diagram of the Gross-Neveu model in d=2+1 space-time dimensions in the plane spanned by temperature and the number of massless fermion flavors. We use a function…
Hit-and-run for numerical integration
Daniel Rudolf
We study the numerical computation of an expectation of a bounded function with respect to a measure given by a non-normalized density on a convex body. We assume that the density…
Centauri A in the far infrared
R. Liseau, B. Montesinos, G. Olofsson +15
Chromospheres and coronae are common phenomena on solar-type stars. Understanding the energy transfer to these heated atmospheric layers requires direct access to the relevant empi…
Photonic Floquet Topological Insulators
Mikael C. Rechtsman, Julia M. Zeuner, Yonatan Plotnik +4
The topological insulator is a fundamentally new phase of matter, with the striking property that the conduction of electrons occurs only on its surface, not within the bulk, and t…
Compact binary evolutions with the Z4c formulation
David Hilditch, Sebastiano Bernuzzi, Marcus Thierfelder +3
Numerical relativity simulations of compact binaries with the Z4c and BSSNOK formulations are compared. The Z4c formulation is advantageous in every case considered. In simulations…