Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Cartarius, Holger"'
Studying worked examples has been shown by extensive research to be an effective method for learning to solve well-structured problems in physics and mathematics. The effectiveness of learning with worked examples has been demonstrated and documented
Externí odkaz:
http://arxiv.org/abs/2307.06315
Publikováno v:
J. Phys. A 53, 405304 (2020)
Balanced gain and loss leads to stationary dynamics in open systems. This occurs naturally in PT-symmetric systems, where the imaginary part of the potential describing gain and loss is perfectly antisymmetric. While this case seems intuitive, statio
Externí odkaz:
http://arxiv.org/abs/1908.10774
Publikováno v:
Phys. Rev. A 100, 063605 (2019)
It is shown that the distinct oscillations of the purity of the single-particle density matrix for many-body open quantum systems with balanced gain and loss reported by Dast et al. [Phys. Rev. A 93, 033617 (2016)] can also be found in closed quantum
Externí odkaz:
http://arxiv.org/abs/1905.11671
Publikováno v:
Phys. Rev. A 100, 063826 (2019)
On a two-dimensional planar parity-time-($\mathcal{PT}$-)symmetric nonlinear magnetic metamaterial, consisting of split-ring dimers with balanced gain and loss, discrete breather solutions can be found. We extend these studies and by numerical calcul
Externí odkaz:
http://arxiv.org/abs/1904.13075
Publikováno v:
Phys. Rev. A 98, 013628 (2018)
We investigate dissipative extensions of the Su-Schrieffer-Heeger model with regard to different approaches of modeling dissipation. In doing so, we use two distinct frameworks to describe the gain and loss of particles, one uses Lindblad operators w
Externí odkaz:
http://arxiv.org/abs/1803.02636
Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss
We investigate the Su-Schrieffer-Heeger model in presence of an injection and removal of particles, introduced via a master equation in Lindblad form. It is shown that the dynamics of the density matrix follows the predictions of calculations in whic
Externí odkaz:
http://arxiv.org/abs/1802.06128
Autor:
Mathea, Tina, Dast, Dennis, Dizdarevic, Daniel, Cartarius, Holger, Main, Jörg, Wunner, Günter
Publikováno v:
J. Phys. A 51, 315303 (2018)
Bose-Einstein condensates with balanced gain and loss in a double-well potential have been shown to exhibit PT-symmetric states. As proposed by Kreibich et al [Phys. Rev. A 87, 051601(R) (2013)], in the mean-field limit the dynamical behaviour of thi
Externí odkaz:
http://arxiv.org/abs/1802.01323
Autor:
Dizdarevic, Daniel, Main, Jörg, Alpin, Kirill, Reiff, Johannes, Dast, Dennis, Cartarius, Holger, Wunner, Günter
Publikováno v:
Phys. Rev. A 97, 013623 (2018)
A quantum system exhibiting $\mathcal{PT}$ symmetry is a Bose-Einstein condensate in a double-well potential with balanced particle gain and loss, which is described in the mean-field limit by a Gross-Pitaevskii equation with a complex potential. A p
Externí odkaz:
http://arxiv.org/abs/1710.08181
Publikováno v:
Phys. Rev. A 97, 032134 (2018)
The spectral renormalization method was introduced in 2005 as an effective way to compute ground states of nonlinear Schr\"odinger and Gross-Pitaevskii type equations. In this paper, we introduce an orthogonal spectral renormalization (OSR) method to
Externí odkaz:
http://arxiv.org/abs/1710.01231
Publikováno v:
Phys. Rev. A 97, 033607 (2018)
PT-symmetric quantum mechanics allows finding stationary states in mean-field systems with balanced gain and loss of particles. In this work we apply this method to rotating Bose-Einstein condensates with contact interaction which are known to suppor
Externí odkaz:
http://arxiv.org/abs/1709.07213