Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Patrick Vorndamme"'
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043040 (2023)
Isotropic but otherwise largely arbitrary Heisenberg models in the presence of a homogeneous magnetic field are considered, including various integrable, nonintegrable, as well as disordered examples, and not necessarily restricted to one dimension o
Externí odkaz:
https://doaj.org/article/814ac7e38ec5461aa962cb3105388a80
Publikováno v:
New Journal of Physics, Vol 23, Iss 8, p 083038 (2021)
Equilibration of observables in closed quantum systems that are described by a unitary time evolution is a meanwhile well-established phenomenon apart from a few equally well-established exceptions. Here we report the surprising theoretical observati
Externí odkaz:
https://doaj.org/article/1a4ab62e5e1144b09a88e6147b52aecd
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033210 (2020)
We investigate how the observable relaxation behavior of an isolated quantum many-body system is modified in response to weak-to-moderate perturbations within a nonperturbative typicality framework. A key role is played by the so-called perturbation
Externí odkaz:
https://doaj.org/article/e8582dbb56d8496ba4893286acb4cfd3
Publikováno v:
Physical Review B. 105
Deriving conditions under which a macroscopic system thermalizes directly from the underlying quantum many-body dynamics of its microscopic constituents is a long-standing challenge in theoretical physics. The well-known eigenstate thermalization hyp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::257d089f87800fd3a56e38eab0f6cff1
https://doi.org/10.1103/physrevb.105.024310
https://doi.org/10.1103/physrevb.105.024310
Autor:
Tjark Heitmann, Dario Anselmetti, Julian Ehrens, Niklas Biere, Xianghui Zhang, Florian Gayk, Armin Gölzhäuser, Patrick Vorndamme, Jürgen Schnack
Carbon nanomembranes made from aromatic precursor molecules are free standing nanometer thin materials of macroscopic lateral dimensions. Although produced in various versions for about two decades not much is known about their internal structure. He
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44499161c37d16398c1083e528086bdd
https://pub.uni-bielefeld.de/record/2953820
https://pub.uni-bielefeld.de/record/2953820
Autor:
Jürgen Schnack, Tjark Heitmann, Julian Ehrens, Andreas Mrugalla, Patrick Vorndamme, Florian Gayk
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 99:215-219
Classical carbon potentials together with classical molecular dynamics are employed to calculate structures and physical properties of such carbon-based materials where quantum mechanical methods fail either due to the excessive size, irregular struc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::142799eb8be5de25bb2a34cd0b062c1b
https://doi.org/10.1016/j.physe.2018.02.009
https://doi.org/10.1016/j.physe.2018.02.009
Autor:
Patrick Vorndamme, Jürgen Schnack
Recently it was shown that by means of an STM it is experimentally possible to stimulate clock transitions between the singlet and the non-magnetic triplet state of a Heisenberg-coupled spin dimer (Bae et al., Science Advances 4, eaau4159). This lead
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::063b4a55bf2c39fdf180765577580841
http://arxiv.org/abs/1912.05952
http://arxiv.org/abs/1912.05952