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50 papers · 1 filter
Two-Dimensional Supersymmetric Quantum Mechanics: Two Fixed Centers of Force
M. A. Gonzalez Leon, J. Mateos Guilarte, M. de la Torre Mayado
The problem of building supersymmetry in the quantum mechanics of two Coulombian centers of force is analyzed. It is shown that there are essentially two ways of proceeding. The sp…
Magnetized CMB observables: a dedicated numerical approach
Massimo Giovannini, Kerstin E. Kunze
Large-scale magnetic fields affect the scalar modes of the geometry whose ultimate effect is to determine the anisotropies of the Cosmic Microwave Background (CMB in what follows).…
Equations of the moduli of Higgs pairs and infinite Grassmannian
D. Hernandez-Serrano, J. M. Muñoz Porras, F. J. Plaza Martin
In this paper the moduli space of Higgs pairs over a fixed smooth projective curve with extra formal data is defined and it is endowed with a scheme structure. We introduce a relat…
A magnetized completion of the CDM paradigm
Massimo Giovannini, Kerstin E. Kunze
The standard CDM paradigm is complemented with a magnetized contribution whose effects on the anisotropies of the Cosmic Microwave Background (CMB) are assessed by means of a de…
Accelerating expansion and change of signature
Marc Mars, José M. M. Senovilla, Raül Vera
We show that some types of sudden singularities admit a natural explanation in terms of regular changes of signature on brane-worlds in AdS. The present accelerated expansion…
Koszul complexes and fully faithful integral functors
Fernando Sancho de Salas
We characterise those objects in the derived category of a scheme which are a sheaf supported on a closed subscheme in terms of Koszul complexes. This is applied to generalize to a…