Zobrazeno 1 - 10
of 880
pro vyhledávání: '"P. Karrasch"'
Publikováno v:
Geoscientific Instrumentation, Methods and Data Systems, Vol 13, Pp 163-176 (2024)
Environmental observations are crucial for understanding the state of the environment. However, current observation networks are limited in their spatial and temporal resolution due to high costs. For many applications, data acquisition with a higher
Externí odkaz:
https://doaj.org/article/21ad60edfad04bc58d48c06e15fbd405
We investigate the ergodicity-to-localization transition in interacting fermion systems subjected to a spatially uniform electric field. For that we employ the recently proposed Tensorflow Equations (TFE), a type of continuous unitary flow equations.
Externí odkaz:
http://arxiv.org/abs/2411.14527
Autor:
Heinze, L., Kotte, T., Rausch, R., Demuer, A., Luther, S., Feyerherm, R., Ammerlaan, A. A. L. N., Zeitler, U., Gorbunov, D. I., Uhlarz, M., Rule, K. C., Wolter, A. U. B., Kühne, H., Wosnitza, J., Karrasch, C., Süllow, S.
We report an extensive high-field study of atacamite Cu$_2$Cl(OH)$_3$, a material realization of quantum sawtooth chains with weak interchain couplings, in continuous and pulsed magnetic fields up to 58 T. In particular, we have mapped the entropy la
Externí odkaz:
http://arxiv.org/abs/2410.01947
Autor:
Decker, K. S. C., Karrasch, C.
Publikováno v:
Eur. Phys. J. B 97, 115 (2024)
We document the ground state phase diagram of the one-dimensional Kitaev chain with quasi-periodic disorder in the presence of two-body interactions. Our data was obtained for systems of $L=1000$ sites using large-scale density matrix renormalization
Externí odkaz:
http://arxiv.org/abs/2402.12897
Autor:
Rausch, R., Karrasch, C.
The antiferromagnetic sawtooth chain is a prototypical example of a frustrated spin system with vertex-sharing triangles, giving rise to complex quantum states. Depending on the interaction parameters, this system has three phases, of which the gaple
Externí odkaz:
http://arxiv.org/abs/2402.05759
Autor:
He, Yuchi, Rausch, Roman, Peschke, Matthias, Karrasch, Christoph, Corboz, Philippe, Bultinck, Nick, Parameswaran, S. A.
We use unrestricted Hartree-Fock, density matrix renormalization group, and variational projected entangled pair state calculations to investigate the ground state phase diagram of the triangular lattice Hubbard model at "half doping" relative to sin
Externí odkaz:
http://arxiv.org/abs/2311.10146
Publikováno v:
PhysRevLett.132.136501(2024)
Interacting fermionic ladders are important platforms to study quantum phases of matter, such as different types of Mott insulators. In particular, the D-Mott and S-Mott states hold pre-formed fermion pairs and become paired-fermion liquids upon dopi
Externí odkaz:
http://arxiv.org/abs/2302.14085
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-1-W2, Pp 305-310 (2013)
The paper deals with using a TIR camera on an UAV for acquiring multitemporal thermal images of a building block against the background of detecting, monitoring and analysing urban heat islands. It is motivated by a research project called EO2HEAVEN
Externí odkaz:
https://doaj.org/article/ee56ae48a3374c23a97f01377ae17c5d
Publikováno v:
Phys. Rev. Research 5, 023015 (2023)
We investigate the nonequilibrium dynamics of the $S=1$ quantum spin chain subjected to a time-dependent external drive, where the driving frequency is adiabatically decreased as a function of time (``Floquet adiabatic evolution''). We show that when
Externí odkaz:
http://arxiv.org/abs/2210.16088
Publikováno v:
Nature Commununications 14, 5847 (2023)
When a generic quantum system is prepared in a simple initial condition, it typically equilibrates toward a state that can be described by a thermal ensemble. A known exception are localized systems which are non-ergodic and do not thermalize, howeve
Externí odkaz:
http://arxiv.org/abs/2210.03153