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Quantum spin models with a large number of interaction partners per spin are frequently used to describe modern many-body quantum optical systems like arrays of Rydberg atoms, atom-cavity systems or trapped ion crystals. For theoretical analysis the
Externí odkaz:
http://arxiv.org/abs/2407.18156
Autor:
Schneider, Benedikt, Sbierski, Björn
In frustrated magnetism, the empirically found quantum-to-classical correspondence (QCC) matches the real-space static susceptibility pattern of a quantum spin-$1/2$ model with its classical counterpart computed at a certain elevated temperature. Thi
Externí odkaz:
http://arxiv.org/abs/2407.09401
Autor:
Schneider, Benedikt, Reuther, Johannes, Gonzalez, Matías G., Sbierski, Björn, Niggemann, Nils
We implement the temperature flow scheme first proposed by Honerkamp and Salmhofer in Phys.~Rev.~B 64, 184516 (2001) into the pseudo-Majorana functional renormalization group method for quantum spin systems. Since the renormalization group parameter
Externí odkaz:
http://arxiv.org/abs/2312.14838
Publikováno v:
SciPost Phys. 15.5.183 (2023)
In the field of quantum many-body physics, the spectral (or Lehmann) representation simplifies the calculation of Matsubara n-point correlation functions if the eigensystem of a Hamiltonian is known. It is expressed via a universal kernel function an
Externí odkaz:
http://arxiv.org/abs/2304.03774
Publikováno v:
Phys. Rev. B 106 (2022), 235113
The pseudo-fermion representation for $S=1/2$ quantum spins introduces unphysical states in the Hilbert space which can be projected out using the Popov-Fedotov trick. However, state-of-the-art implementation of the functional renormalization group m
Externí odkaz:
http://arxiv.org/abs/2209.13484
We give a complete classification of fully symmetric as well as chiral $\mathbb{Z}_2$ quantum spin liquids on the pyrochlore lattice using a projective symmetry group analysis of Schwinger boson mean-field states. We find 50 independent ans\"atze, in
Externí odkaz:
http://arxiv.org/abs/2107.13574
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Autor:
Meller, Oliver, Pfaffeneder-Mantai, Florian, Schneider, Benedikt, Ströbele, Dragan, Frank, Wilhelm, Turhani, Dritan
Publikováno v:
In Advances in Oral and Maxillofacial Surgery January-March 2022 5
Publikováno v:
In Intelligence July-August 2021 87
Autor:
Schüler, Florian, Schneider, Benedikt
Publikováno v:
Praxisanleitung; 2024, Issue 3, p31-37, 7p