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pro vyhledávání: '"Wuhrer, Dennis"'
We investigate the viability of dipole-dipole interaction as a means of entangling two distant ferromagnets. To this end we make use of the Bogoliubov transformation as a symplectic transformation. We show that the coupling of the uniform magnon mode
Externí odkaz:
http://arxiv.org/abs/2403.13354
Autor:
Schoenfeld, Christoph, Feuerer, Lennart, Wuhrer, Dennis, Belzig, Wolfgang, Leitenstorfer, Alfred, Juraschek, Dominik, Bossini, Davide
The macroscopic magnetic order in the ground state of solids is determined by the spin-dependent Hamiltonian of the system. In the absence of external magnetic fields, this Hamiltonian contains the exchange interaction, which is of electrostatic orig
Externí odkaz:
http://arxiv.org/abs/2310.19667
We investigate squeezing of magnons in a conical spin spiral configuration. We find that while the energy of magnons propagating along the $\boldsymbol{k}$ and the $-\boldsymbol{k}$ directions can be different due to the non-reciprocal dispersion, th
Externí odkaz:
http://arxiv.org/abs/2304.06338
Publikováno v:
Phys. Rev. B 105, 054406 (2022)
Recent investigations of the quantum properties of an antiferromagnet in the spin wave approximation have identified the eigenstates as two-mode squeezed sublattice states. The uniform squeezed vacuum and one-magnon states were shown to display a mas
Externí odkaz:
http://arxiv.org/abs/2108.01942
Autor:
Bodendorfer, Norbert, Wuhrer, Dennis
Publikováno v:
Class. Quantum Grav. 37 (2020) 185007
We present an analytic computation of an explicit renormalisation group flow for cosmological states in loop quantum gravity. A key ingredient in our analysis are Perelomov coherent states for the Lie group SU(1,1) whose representation spaces are emb
Externí odkaz:
http://arxiv.org/abs/1904.13269
Akademický článek
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Autor:
Bodendorfer, Norbert, Wuhrer, Dennis
Publikováno v:
Classical & Quantum Gravity; 9/17/2020, Vol. 37 Issue 18, p1-21, 21p