Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Knaute, Johannes"'
Autor:
Lee, Loong Kuan, Knaute, Johannes, Gerhardt, Florian, Völker, Patrick, Maras, Tomislav, Dotterweich, Alexander, Piatkowski, Nico
Adiabatic quantum computation (AQC) is a well-established method to approximate the ground state of a quantum system. Actual AQC devices, known as quantum annealers, have certain limitations regarding the choice of target Hamiltonian. Specifically, t
Externí odkaz:
http://arxiv.org/abs/2409.09857
Dynamical quantum phase transitions (DQPTs) have been established as a rigorous framework for investigating far-from-equilibrium quantum many-body criticality. Although initially thought to be trivially connected to an order parameter flipping sign,
Externí odkaz:
http://arxiv.org/abs/2407.03394
Lattice gauge theories (LGT) play a central role in modern physics, providing insights into high-energy physics, condensed matter physics, and quantum computation. Due to the nontrivial structure of the Hilbert space of LGT systems, entanglement in s
Externí odkaz:
http://arxiv.org/abs/2401.01942
Publikováno v:
JHEP 2024, 174 (2024)
We develop a transfer operator approach for the calculation of R\'enyi entanglement entropies in arbitrary (i.e. Abelian and non-Abelian) pure lattice gauge theory projected entangled pair states in 2+1 dimensions. It is explicitly shown how the long
Externí odkaz:
http://arxiv.org/abs/2401.01930
Autor:
Knaute, Johannes
Publikováno v:
Phys. Rev. B 107, L100303 (2023)
We use tensor network simulations to calculate the time evolution of the lower part of the entanglement spectrum and return rate functions after global quantum quenches in the Ising model. We consider ground state quenches towards mesonic parameter r
Externí odkaz:
http://arxiv.org/abs/2210.15682
Publikováno v:
Phys. Rev. D 108, 076016 (2023)
We propose to use quantum information notions to characterize thermally induced melting of nonperturbative bound states at high temperatures. We apply tensor networks to investigate this idea in static and dynamical settings within the Ising quantum
Externí odkaz:
http://arxiv.org/abs/2206.10528
Autor:
Knaute, Johannes, Hauke, Philipp
Publikováno v:
Phys. Rev. A 105, 022616 (2022)
The recent rapid experimental advancement in the engineering of quantum many-body systems opens the avenue to controlled studies of fundamental physics problems via digital or analog quantum simulations. Here, we systematically analyze the capability
Externí odkaz:
http://arxiv.org/abs/2107.09071
Autor:
Banerjee, Subhashish, Choudhury, Sayantan, Chowdhury, Satyaki, Knaute, Johannes, Panda, Sudhakar, Shirish, K.
Publikováno v:
Nucl.Phys.B 996 (2023) 116368
In this article, we study the quantum field theoretic generalization of the Caldeira-Leggett model in general curved space-time considering interactions between two scalar fields in a classical gravitational background. The thermalization phenomena i
Externí odkaz:
http://arxiv.org/abs/2104.10692
Autor:
Camargo, Hugo, Heller, Michal P., Jefferson, Ro, Knaute, Johannes, Reyes, Ignacio, Singh, Sukhbinder, Svensson, Viktor
During the SARS-CoV-2 pandemic, theoretical high-energy physics, and likely also the majority of other disciplines, are seeing a surge of virtual seminars as a primary means for scientific exchange. In this brief article, we highlight some compelling
Externí odkaz:
http://arxiv.org/abs/2004.09922
Publikováno v:
Phys. Rev. Research 2, 033301 (2020)
One of the most interesting directions in theoretical high-energy and condensed-matter physics is understanding dynamical properties of collective states of quantum field theories. The most elementary tool in this quest is retarded equilibrium correl
Externí odkaz:
http://arxiv.org/abs/1912.08836