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of 4 572
pro vyhledávání: '"Weichselbaum A"'
The transport across a Kondo-correlated quantum dot coupled to two leads with independent temperatures and chemical potentials is studied using a controlled non-perturbative, and in this sense exact numeric treatment based on a hybrid numerical renor
Externí odkaz:
http://arxiv.org/abs/2409.03102
Autor:
Gustafson, Erik, Sherbert, Kyle, Florio, Adrien, Shirali, Karunya, Chen, Yanzhu, Lamm, Henry, Valgushev, Semeon, Weichselbaum, Andreas, Economou, Sophia E., Pisarski, Robert D., Tubman, Norm M.
Inspired by recent advancements of simulating periodic systems on quantum computers, we develop a new approach, (SC)$^2$-ADAPT-VQE, to further advance the simulation of these systems. Our approach extends the scalable circuits ADAPT-VQE framework, wh
Externí odkaz:
http://arxiv.org/abs/2408.12641
Autor:
Lotem, Matan, Sankar, Sarath, Ren, Tianhao, Goldstein, Moshe, König, Elio. J., Weichselbaum, Andreas, Sela, Eran, Tsvelik, Alexei M.
Publikováno v:
Phys. Rev. B 110, 235122 (2024)
A Kondo model with symplectic symmetry was recently put forward as the effective low-energy theory of a superconducting-island device coupled to multiple leads. This model, which possesses non-Fermi liquid physics and effective anyons, was argued to
Externí odkaz:
http://arxiv.org/abs/2407.12093
Autor:
Kish, Lazar L., Weichselbaum, Andreas, Pajerowski, Daniel M., Savici, Andrei T., Podlesnyak, Andrey, Vasylechko, Leonid, Tsvelik, Alexei, Konik, Robert, Zaliznyak, Igor A.
Conventional wisdom dictates that quantum effects become unimportant at high temperatures. In magnets, when the thermal energy exceeds interactions between atomic magnetic moments, the moments are usually uncorrelated, and classical paramagnetic beha
Externí odkaz:
http://arxiv.org/abs/2406.16753
Autor:
Weichselbaum, Andreas
Publikováno v:
SciPost Phys. Codebases 40 (2024)
This is the documentation for the tensor library QSpace (v4.0), a toolbox to exploit `quantum symmetry spaces' in tensor network states in the quantum many-body context. QSpace permits arbitrary combinations of symmetries including the abelian symmet
Externí odkaz:
http://arxiv.org/abs/2405.06632
Autor:
Malla, Rajesh K., Sukeno, Hiroki, Yu, Hongye, Wei, Tzu-Chieh, Weichselbaum, Andreas, Konik, Robert M.
In recent quantum algorithmic developments, a feedback-based approach has shown promise for preparing quantum many-body system ground states and solving combinatorial optimization problems. This method utilizes quantum Lyapunov control to iteratively
Externí odkaz:
http://arxiv.org/abs/2401.15303
We consider a $\mathbb{Z}_3$ gauge theory coupled to three degenerate massive flavors of fermions, which we term "QZD". The spectrum can be computed in $1+1$ dimensions using tensor networks. In weak coupling the spectrum is that of the expected meso
Externí odkaz:
http://arxiv.org/abs/2310.18312
We present a protocol for detecting multipartite entanglement in itinerant many-body electronic systems using single particle Green's functions. To achieve this, we first establish a connection between the quantum Fisher information (QFI) and single
Externí odkaz:
http://arxiv.org/abs/2310.05870
Autor:
Saraidaris, Dimitris, Li, Jheng-Wei, Weichselbaum, Andreas, von Delft, Jan, Abanin, Dmitry A.
Publikováno v:
Phys. Rev. B 109, 094201 (2024)
SU(N) symmetry is incompatible with the many-body localized (MBL) phase, even when strong disorder is present. However, recent studies have shown that finite-size SU(2) systems exhibit non-ergodic, subthermal behavior, characterized by the breakdown
Externí odkaz:
http://arxiv.org/abs/2304.03099
Publikováno v:
Phys. Rev. Research 5, 033016 (2023)
Two spatially separated magnetic impurities coupled to itinerant electrons give rise to a dynamically generated exchange (RKKY) inter-impurity interaction that competes with the individual Kondo screening of the impurities. It has been recently shown
Externí odkaz:
http://arxiv.org/abs/2208.02275