Zobrazeno 1 - 10
of 309
pro vyhledávání: '"MOLNÁR, ANDRÁS"'
Projected entangled pair states (PEPS) are very useful in the description of strongly correlated systems, partly because they allow encoding symmetries, either global or local (gauge), naturally. In recent years, PEPS with local symmetries have incre
Externí odkaz:
http://arxiv.org/abs/2410.18947
We consider the classification problem of quantum spin chains invariant under local decomposable group actions, covering matrix product unitaries (MPUs), using an operator algebraic approach. We focus on finite group symmetries hosting both symmetric
Externí odkaz:
http://arxiv.org/abs/2403.18573
Autor:
Mavrogeni, Panayiota1 (AUTHOR) panayiota.mavrogeni@icloud.com, Molnár, András2 (AUTHOR) andrasm94@gmail.com, Molnár, Viktória2 (AUTHOR), Tamás, László2,3 (AUTHOR), Maihoub, Stefani2 (AUTHOR)
Publikováno v:
Journal of Clinical Medicine. Dec2024, Vol. 13 Issue 23, p7261. 11p.
The paper contributes to strengthening the relation between machine learning and the theory of differential equations. In this context, the inverse problem of fitting the parameters, and the initial condition of a differential equation to some measur
Externí odkaz:
http://arxiv.org/abs/2206.09054
Publikováno v:
Lett Math Phys 114, 43 (2024)
The classification of topological phases of matter is fundamental to understand and characterize the properties of quantum materials. In this paper we study phases of matter in one-dimensional open quantum systems. We define two mixed states to be in
Externí odkaz:
http://arxiv.org/abs/2204.06295
Autor:
Molnar, Andras, de Alarcón, Alberto Ruiz, Garre-Rubio, José, Schuch, Norbert, Cirac, J. Ignacio, Pérez-García, David
Matrix Product Operators (MPOs) are tensor networks representing operators acting on 1D systems. They model a wide variety of situations, including communication channels with memory effects, quantum cellular automata, mixed states in 1D quantum syst
Externí odkaz:
http://arxiv.org/abs/2204.05940
Publikováno v:
Quantum 7, 927 (2023)
We classify the different ways in which matrix product states (MPSs) can stay invariant under the action of matrix product operator (MPO) symmetries. This is achieved through a local characterization of how the MPSs, that generate a ground space, rem
Externí odkaz:
http://arxiv.org/abs/2203.12563
We determine the local symmetries and local transformation properties of translationally invariant matrix product states (MPS). We focus on physical dimension $d=2$ and bond dimension $D=3$ and use the procedure introduced in D. Sauerwein et al., Phy
Externí odkaz:
http://arxiv.org/abs/2111.02457
Autor:
Santana, Senaida Hernández, Molnar, Andras, Gogolin, Christian, Cirac, J. Ignacio, Acín, Antonio
While temperature is well understood as an intensive quantity in standard thermodynamics, it is less clear whether the same holds in the presence of strong correlations, especially in the case of quantum systems, which may even display correlations w
Externí odkaz:
http://arxiv.org/abs/2010.15256
Publikováno v:
PRX Quantum 1, 010304 (2020)
Matrix Product States form the basis of powerful simulation methods for ground state problems in one dimension. Their power stems from the fact that they faithfully approximate states with a low amount of entanglement, the "area law". In this work, w
Externí odkaz:
http://arxiv.org/abs/2003.12418