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14 papers · 1 filter
Determinantal quartics and the computation of the Picard group
Andreas-Stephan Elsenhans, Jörg Jahnel
We test the methods for computing the Picard group of a surface in a situation of high rank. The examples chosen are resolutions of quartics in $\bP^3$ having 14 singularities…
On Glauber modes in Soft-Collinear Effective Theory
Christian W. Bauer, Bjorn O. Lange, Grigory Ovanesyan
Gluon interactions involving spectator partons in collisions at hadronic machines are investigated. We find a class of examples in which a mode, called Glauber gluons, must be intr…
Taming multiparticle entanglement
Bastian Jungnitsch, Tobias Moroder, Otfried Gühne
We present an approach to characterize genuine multiparticle entanglement using appropriate approximations in the space of quantum states. This leads to a criterion for entanglemen…
Higher Order Power Corrections in Inclusive B Decays
Thomas Mannel, Sascha Turczyk, Nikolai Uraltsev
We discuss order 1/m_b^4 and 1/m_b^5 corrections in inclusive semileptonic decay of a meson. We identify relevant hadronic matrix elements of dimension seven and eight and esti…
Entanglement criteria and full separability of multi-qubit quantum states
Otfried Gühne
We introduce an entanglement criterion to exclude full separability of quantum states. We present numerical evidence that the criterion is necessary and sufficient for the class of…
Enhancement of laser cooling by the use of magnetic gradients
Andreas Albrecht, Alex Retzker, Christof Wunderlich +1
We present a laser cooling scheme for trapped ions and atoms using a combination of laser couplings and a magnetic gradient field. In a Schrieffer-Wolff transformed picture, this s…