Zobrazeno 1 - 10
of 11 453
pro vyhledávání: '"A. Schuch"'
Tensor network contraction is a powerful computational tool in quantum many-body physics, quantum information and quantum chemistry. The complexity of contracting a tensor network is thought to mainly depend on its entanglement properties, as reflect
Externí odkaz:
http://arxiv.org/abs/2410.05414
Autor:
Munakata, K., Hayashi, Y., Kozai, M., Kato, C., Miyashita, N., Kataoka, R., Kadokura, A., Miyake, S., Iwai, K., Echer, E., Lago, A. Dal, Rockenbach, M., Schuch, N. J., Bageston, J. V., Braga, C. R., Jassar, H. K. Al, Sharma, M. M., Duldig, M. L., Humble, J. E., Sabbah, I., Evenson, P., Kuwabara, T., Kóta, J.
This paper presents the global analysis of two extended decreases of the galactic cosmic ray intensity observed by world-wide networks of ground-based detectors in 2012. This analysis is capable of separately deriving the cosmic ray density (or omnid
Externí odkaz:
http://arxiv.org/abs/2408.14696
Autor:
Buhrman, Harry, Gharibian, Sevag, Landau, Zeph, Gall, François Le, Schuch, Norbert, Tamaki, Suguru
Estimating ground state energies of many-body Hamiltonians is a central task in many areas of quantum physics. In this work, we give quantum algorithms which, given any $k$-body Hamiltonian $H$, compute an estimate for the ground state energy and pre
Externí odkaz:
http://arxiv.org/abs/2407.03073
Autor:
Rubio, Jose Garre, Schuch, Norbert
We study the statistics of domain wall excitations in quantum spin chains. We focus on systems with finite symmetry groups represented by matrix product unitaries (MPUs), i.e. finite depth quantum circuits. Such symmetries can be anomalous, in which
Externí odkaz:
http://arxiv.org/abs/2405.00439
We investigate how the computational difficulty of contracting tensor networks depends on the sign structure of the tensor entries. Using results from computational complexity, we observe that the approximate contraction of tensor networks with only
Externí odkaz:
http://arxiv.org/abs/2404.19023
The advancement of quantum simulators motivates the development of a theoretical framework to assist with efficient state preparation in quantum many-body systems. Generally, preparing a target entangled state via unitary evolution with time-dependen
Externí odkaz:
http://arxiv.org/abs/2403.12325
Gradient based optimization methods are the established state-of-the-art paradigm to study strongly entangled quantum systems in two dimensions with Projected Entangled Pair States. However, the key ingredient, the gradient itself, has proven challen
Externí odkaz:
http://arxiv.org/abs/2311.11894
Autor:
Caroline Brand, Camila Felin Fochesatto, Anelise Reis Gaya, Felipe Barreto Schuch, José Francisco López-Gil
Publikováno v:
Child and Adolescent Psychiatry and Mental Health, Vol 18, Iss 1, Pp 1-11 (2024)
Abstract Background Understanding the relationship of social network use and addictive behaviors with adolescent psychosocial health is crucial in today’s digital age. Aim To verify the associations between social network use, messaging application
Externí odkaz:
https://doaj.org/article/70a3b676f5ef4d0bbbe9ee22cb268cb8
Autor:
Tu, Wei-Lin, Vanderstraeten, Laurens, Schuch, Norbert, Lee, Hyun-Yong, Kawashima, Naoki, Chen, Ji-Yao
Publikováno v:
PRX Quantum 5, 010335 (2024)
Diagrammatic summation is a common bottleneck in modern applications of projected entangled-pair states, especially in computing low-energy excitations of a two-dimensional quantum many-body system. To solve this problem, here we extend the generatin
Externí odkaz:
http://arxiv.org/abs/2307.08083
(2+1)-D chiral topological phases are often identified by studying low-lying entanglement spectra (ES) of their wavefunctions on long cylinders of finite circumference. For chiral topological states that possess global $\mathrm{SU}(3)$ symmetry, we c
Externí odkaz:
http://arxiv.org/abs/2305.13240