Search Results - "Schützhold, Ralf"

Dynamically assisted Sauter-Schwinger effect in inhomogeneous electric fields by Schneider, Christian, Schützhold, Ralf

“…A bstract Via the world-line instanton method, we study electron-positron pair creation by a strong (but sub-critical) electric field of the profile E/ cosh 2…”
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Quasi-particle Propagation Across Semiconductor–Mott Insulator Interfaces by Verlage, Jan, Queisser, Friedemann, Szpak, Nikodem, König, Jürgen, Kratzer, Peter, Schützhold, Ralf

“…As a prototypical example for a heterostructure combining a weakly and a strongly interacting quantum many-body system, we study the interface between a…”
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Small cosmological constant from the QCD trace anomaly? by Schützhold, Ralf

“…According to recent astrophysical observations the large scale mean pressure of our present Universe is negative suggesting a positive cosmological…”
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Monogamy of entanglement and improved mean-field ansatz for spin lattices by Osterloh, Andreas, Schützhold, Ralf

“…We consider rather general spin-1/2 lattices with large coordination numbers Z. Based on the monogamy of entanglement and other properties of the concurrence…”
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Dynamically assisted tunneling in the impulse regime by Kohlfürst, Christian, Queisser, Friedemann, Schützhold, Ralf

“…We study the enhancement of tunneling through a potential barrier V(x) by a time-dependent electric field with special emphasis on pulse-shaped vector…”
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Signatures of the Unruh effect from electrons accelerated by ultrastrong laser fields by Schützhold, Ralf, Schaller, Gernot, Habs, Dietrich

“…We calculate the radiation resulting from the Unruh effect for strongly accelerated electrons and show that the photons are created in pairs whose…”
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Hawking radiation in an electromagnetic waveguide? by SCHÜTZHOLD, Ralf, UNRUH, William G

“…It is demonstrated that the propagation of electromagnetic waves in an appropriately designed waveguide is (for large wavelengths) analogous to that within a…”
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Vortex quantum creation and winding number scaling in a quenched spinor Bose gas by Uhlmann, Michael, Schützhold, Ralf, Fischer, Uwe R

“…Motivated by a recent experiment, we study nonequilibrium quantum phenomena taking place in the quench of a spinor Bose-Einstein condensate through the…”
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Quantum simulation of cosmic inflation in two-component Bose-Einstein condensates by Fischer, Uwe, Schützhold, Ralf

“…Generalizing the one-component case, we demonstrate that the propagation of sound waves in two-component Bose-Einstein condensates can also be described in…”
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Universal frozen spectra after time-dependent symmetry restoring phase transitions by Queisser, Friedemann, Navez, Patrick, Schützhold, Ralf

“…For a general O(N) model, we study the time-dependent phase transition from a state with broken symmetry <φ> ≠ 0 to the symmetric phase <φ> = 0. During this…”
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Sweeping from the superfluid to the Mott phase in the Bose-Hubbard model by Schützhold, Ralf, Uhlmann, Michael, Xu, Yan, Fischer, Uwe R

“…We study the sweep through the quantum phase transition from the superfluid to the Mott state for the Bose-Hubbard model with a time-dependent tunneling rate…”
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Avalanche of entanglement and correlations at quantum phase transitions by Krutitsky, Konstantin V., Osterloh, Andreas, Schützhold, Ralf

“…We study the ground-state entanglement in the quantum Ising model with nearest neighbor ferromagnetic coupling J and find a sequential increase of entanglement…”
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Giant magneto-photoelectric effect in suspended graphene by Sonntag, Jens, Kurzmann, Annika, Geller, Martin, Queisser, Friedemann, Lorke, Axel, Schützhold, Ralf

“…We study the optical response of a suspended, monolayer graphene field-effect transistor structure in magnetic fields of up to 9 T (quantum Hall regime). With…”
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Ginzburg effect in a dielectric medium with dispersion and dissipation by Lang, Sascha, Sauerbrey, Roland, Schützhold, Ralf, Unruh, William G.

“…As a quantum analog of Cherenkov radiation, an inertial photon detector moving through a medium with constant refractive index n may perceive the…”
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Tabletop creation of entangled multi-keV photon pairs and the Unruh effect by Schützhold, Ralf, Schaller, Gernot, Habs, Dietrich

“…Electrons moving in a strong periodic electromagnetic field (e.g., laser or undulator) may convert quantum vacuum fluctuations into pairs of entangled photons,…”
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Momentum space separation of quantum path interferences between photons and surface plasmon polaritons in nonlinear photoemission microscopy by Dreher, Pascal, Janoschka, David, Giessen, Harald, Schützhold, Ralf, Davis, Timothy J., Horn-von Hoegen, Michael, Meyer zu Heringdorf, Frank-J.

“…Quantum path interferences occur whenever multiple equivalent and coherent transitions result in a common final state. Such interferences strongly modify the…”
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Propagation of quantum correlations after a quench in the Mott-insulator regime of the Bose-Hubbard model by Krutitsky, Konstantin V, Navez, Patrick, Queisser, Friedemann, Schützhold, Ralf

“…We study a quantum quench in the Bose-Hubbard model where the tunneling rate J is suddenly switched from zero to a finite value in the Mott regime. In order to…”
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Dynamical Quantum Phase Transitions by Schutzhold, Ralf

“…A sweep through a quantum phase transition by means of a time-dependent external parameter (e.g., pressure) entails non-equilibrium phenomena associated with a…”
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‘Exotic’ quantum effects in the laboratory? by Ralf Schützhold

“…This article provides a brief (non-exhaustive) review of some recent developments regarding the theoretical and possibly experimental study of ‘exotic’ quantum…”
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Emergence of coherence in the Mott-insulator–superfluid quench of the Bose-Hubbard model by Navez, Patrick, Schützhold, Ralf

“…We study the quench from the Mott-insulator to the superfluid phase in the Bose-Hubbard model and investigate the spatial-temporal growth of phase coherence,…”
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