Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Elmer V. H. Doggen"'
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023146 (2022)
We propose a method, based on matrix product states, for studying the time evolution of many-body quantum lattice systems under continuous and site-resolved measurement. Both the frequency and the strength of generalized measurements can be varied wi
Externí odkaz:
https://doaj.org/article/9b0e2b99b5c04d2389cb2ab767da8f52
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p 033257 (2021)
We investigate the localization properties of a spin chain with an antiferromagnetic nearest-neighbor coupling, subject to an external quasiperiodic on-site magnetic field. The quasiperiodic modulation interpolates between two paradigmatic models, na
Externí odkaz:
https://doaj.org/article/47c572e349ca47f0b8c40de22fa4672e
Whether disordered and quasiperiodic many-body quantum systems host a long-lived localized phase in the thermodynamic limit has been the subject of intense recent debate. While in one dimension substantial evidence for the existence of such a many-bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5ceedd525a24cbd5ce196ec7c07cd94
Thermalization in many-body systems can be inhibited by the application of a linearly increasing potential, which is known as Stark many-body localization. Here we investigate the fate of this phenomenon on a two-dimensional disorder-free lattice wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20efcd963383b6f459e935311141ad3e
Autor:
Jonas F. Karcher, Paul Pöpperl, Alexander D. Mirlin, Elmer V. H. Doggen, Konstantin S. Tikhonov
We explore dynamics of disordered and quasi-periodic interacting lattice models using a self-consistent time-dependent Hartree-Fock (TDHF) approximation, accessing both large systems (up to $L = 400$ sites) and very long times (up to $t = 10^5$). We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b81a37621446b0dd9c59350a7b133efd
We study the dynamics of an interacting quantum spin chain under the application of a linearly increasing field. This model exhibits a type of localization known as Stark many-body localization. The dynamics shows a strong dependence on the initial c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eb9875a3c3bca3eb581fecfe47421cf
http://arxiv.org/abs/2012.13722
http://arxiv.org/abs/2012.13722
Publikováno v:
Physical review letters. 125(15)
We study the delocalization dynamics of interacting disordered hard-core bosons for quasi-1D and 2D geometries, with system sizes and time scales comparable to state-of-the-art experiments. The results are strikingly similar to the 1D case, with slow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::869441ef77923a1f053037593ed3a860
https://pubmed.ncbi.nlm.nih.gov/33095604
https://pubmed.ncbi.nlm.nih.gov/33095604
Publikováno v:
Annals of Physics. 435:168437
Recent developments in matrix-product-state (MPS) investigations of many-body localization (MBL) are reviewed, with a discussion of benefits and limitations of the method. This approach allows one to explore the physics around the MBL transition in s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c306c2628fbaeed83db925d518e130f
https://doi.org/10.1016/j.aop.2021.168437
https://doi.org/10.1016/j.aop.2021.168437
We study quench dynamics in an interacting spin chain with a quasi-periodic on-site field, known as the interacting Aubry-Andr\'e model of many-body localization. Using the time-dependent variational principle, we assess the late-time behavior for ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afb8bdc72ef35d9fd0bbfb643a7618e2
http://arxiv.org/abs/1901.06971
http://arxiv.org/abs/1901.06971
Autor:
Konstantin S. Tikhonov, Titus Neupert, Frank Schindler, Dmitry G. Polyakov, Elmer V. H. Doggen, Alexander D. Mirlin, Igor V. Gornyi
Publikováno v:
Physical Review B
We theoretically study the quench dynamics for an isolated Heisenberg spin chain with a random on-site magnetic field, which is one of the paradigmatic models of a many-body localization transition. We use the time-dependent variational principle as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::044650b4c06e1925f81bd91981fe8020
http://arxiv.org/abs/1807.05051
http://arxiv.org/abs/1807.05051