Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Viktor Eisler"'
Publikováno v:
SciPost Physics, Vol 8, Iss 3, p 037 (2020)
We study the time evolution of magnetization and entanglement for initial states with local excitations, created upon the ferromagnetic ground state of the XY chain. For excitations corresponding to a single or two well separated domain walls, the
Externí odkaz:
https://doaj.org/article/2a5b214b72e84d1497840197fd2ebbc5
Publikováno v:
SciPost Physics, Vol 1, Iss 2, p 014 (2016)
We study the melting of domain walls in the ferromagnetic phase of the transverse Ising chain, created by flipping the order-parameter spins along one-half of the chain. If the initial state is excited by a local operator in terms of Jordan-Wigner
Externí odkaz:
https://doaj.org/article/8f4a5e3f773d49308b7a834feb15074e
Autor:
Viktor Eisler, Zoltán Zimborás
Publikováno v:
New Journal of Physics, Vol 17, Iss 5, p 053048 (2015)
We consider Gaussian states of fermionic systems and study the action of the partial transposition on the density matrix. It is shown that, with a suitable choice of basis, these states are transformed into a linear combination of two Gaussian operat
Externí odkaz:
https://doaj.org/article/e0c098f4060b4097a5861c7fed20c4c3
Publikováno v:
New Journal of Physics, Vol 16, Iss 7, p 073007 (2014)
We propose a method to simulate the real time evolution of one-dimensional quantum many-body systems at finite temperature by expressing both the density matrices and the observables as matrix product states. This allows the calculation of expectatio
Externí odkaz:
https://doaj.org/article/442e31f0a7a7484bb652c8c1558fc53f
Autor:
Viktor Eisler, Zoltán Zimborás
Publikováno v:
New Journal of Physics, Vol 16, Iss 12, p 123020 (2014)
We study the entanglement in a chain of harmonic oscillators driven out of equilibrium by preparing the two sides of the system at different temperatures, and subsequently joining them together. The steady state is constructed explicitly and the loga
Externí odkaz:
https://doaj.org/article/01f285b0b61c4565b701c7e547948955
Autor:
Viktor Eisler
Publikováno v:
Physical Review B. 107
We study entanglement properties in a nonequilibrium steady state of a free-fermion chain, that emerges after connecting two half-chains prepared at different temperatures. The entanglement negativity and the R\'enyi mutual information between two ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::182f444e8b83ec12f04aa3b88bf76b79
https://doi.org/10.1103/physrevb.107.075157
https://doi.org/10.1103/physrevb.107.075157
We consider free-fermion chains in the ground state and the entanglement Hamiltonian for a subsystem consisting of two separated intervals. In this case, one has a peculiar long-range hopping between the intervals in addition to the well-known and do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77978765286ec54b92dadbd444a6297a
Publikováno v:
Annalen der Physik. 534:2200064
We review results about entanglement (or modular) Hamiltonians of quantum many-body systems in field theory and statistical mechanics models, as well as recent applications in the context of quantum information and quantum simulation.
32 pages,
32 pages,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff76e9eb8c334dac2e65f66c08710b8e
https://doi.org/10.1002/andp.202200064
https://doi.org/10.1002/andp.202200064
Autor:
Viktor Eisler
We study the time evolution of entanglement created by local or extended excitations upon the ground state of a free-fermion chain. A single particle or hole excitation produces a single bit of excess entropy for large times and subsystem lengths. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0afc28ca6b4db9d8170585e2af6e139
Autor:
Viktor Eisler, Matthias Gruber
Publikováno v:
SciPost Physics, Vol 10, Iss 1, p 005 (2021)
We study the spreading of entanglement produced by the time evolution of a local fermionic excitation created above the ground state of the XXZ chain. The resulting entropy profiles are investigated via density-matrix renormalization group calculatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd0d8eb162534ea2289fb56648e8916e
https://scipost.org/SciPostPhys.10.1.005
https://scipost.org/SciPostPhys.10.1.005