Article
Physics, Fluids & Plasmas
Li Gan, Stephane Ouvry, Alexios P. Polychronakos
Summary: This study investigates the enumeration problem of closed walks on the honeycomb lattice and maps it to a Hofstadter-like Hamiltonian. The results show a connection between the generating function of closed walks and the grand partition function of a particle system with exclusion statistics of order 2.
Article
Physics, Multidisciplinary
Alexander Stegmaier, Lavi K. Upreti, Ronny Thomale, Igor Boettcher
Summary: The article calculates the Hofstadter butterfly on regular hyperbolic tilings, showing that the butterfly spectrum with large extended gapped regions prevails, originating from Landau levels in hyperbolic space.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Xu Yang, Hao Zheng, Mingpu Qin
Summary: By using the density matrix renormalization group method, the study on the ground state properties of the doped Hubbard model on the honeycomb lattice revealed the presence of a half-filled stripe order. Additionally, complementary large-scale mean-field calculations were performed to observe nearly degenerate stripe states with filling close to one half.
Article
Multidisciplinary Sciences
S. Alyatkin, H. Sigurdsson, A. Askitopoulos, J. D. Topfer, P. G. Lagoudakis
Summary: This study explores the optical manipulation of exciton-polariton systems in Lieb lattices, revealing a nonequilibrium phase transition between scatterer lattice and trapped polariton condensates. By fine tuning lattice parameters, the researchers demonstrate the behavior of polaritons condensing in different potential regimes, paving the way for further exploration of non-Hermitian fluids in non-stationary mixtures.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Kai Shao, Zhuo-Ting Cai, Hao Geng, Wei Chen, D. Y. Xing
Summary: The study investigates the interplay effects between unidirectional transport and localized cyclotron motion on nonreciprocal lattices subject to a magnetic field. It is found that in the long-wavelength limit, the trajectories of wave packets form closed orbits in four-dimensional complex space and predicts a different type of non-Hermitian spectral transition. An order parameter is proposed to describe the mirror-time reversal (MT) phase transition.
Article
Mathematics, Applied
Krzysztof Malarz
Summary: This article presents a rough estimation of the critical occupation probabilities for the random site percolation problem on a honeycomb lattice with complex neighborhoods. It proposes a single-value index to avoid the degeneracy of the percolation threshold and provides functions for basic neighborhoods in computer physics applications.
Article
Mathematics, Applied
Krzysztof Malarz
Summary: This study presents a rough estimation of the critical occupation probabilities for random site percolation problems on honeycomb lattices with complex neighborhoods. The dependence of percolation thresholds on the number of sites in the neighborhoods is discussed, along with the development of a method to avoid degeneracy in these thresholds. It also introduces functions for basic neighborhoods in the Newman and Ziff algorithm for computer physicists working with honeycomb lattice structures.
Article
Physics, Multidisciplinary
Jae Hwan Lee, Jin Min Kim
Summary: In this study, the Laplacian roughening model was investigated on kagome and honeycomb lattices. The density of states was obtained using the Wang-Landau algorithm, and both the specific heat and the partition function zeros were calculated. Critical exponents and transition temperature were measured using finite-size scaling analysis. The results suggest that the system undergoes a single first-order phase transition on both lattices. Previous studies found a single second-order transition on triangular and square lattices. It seems that the type of transition in the Laplacian roughening model depends on the substrate lattice structures.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Nazim Boudjada, Finn Lasse Buessen, Arun Paramekanti
Summary: This paper investigates the interaction of molecular electric dipoles on a two-dimensional triangular lattice with Dirac and flat band states, showing that short-range dipole-dipole interaction can lead to various ordered arrangements. Through simulated annealing and Monte Carlo methods, the ordered states and their thermal transitions are studied as a function of the interaction range.
Article
Chemistry, Multidisciplinary
Hongzhen Zhong, Zhixin Su, Jun Kang
Summary: Recent studies have shown that 2D moire superlattices have the potential to be used as a quantum simulator for condensed matter systems. The interference between moire patterns at different interfaces in 2D multilayer structures allows the realization of more complex lattice models. In the specific case of trilayer moire superlattices (TMSLs) of MoS2, isolated flat moire bands near the valence band edge can be described by the honeycomb lattice ionic Hubbard model. The parameters in the TMSLs, such as the hopping strength, on-site Coulomb repulsion, and staggered potential, can be highly tunable through control of the twist angle, dielectric environment, and perpendicular electric field. This makes TMSLs a versatile platform for studying strong correlation physics in the honeycomb lattice ionic Hubbard model.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yi-Jun Chang, Yong-Heng Lu, Ying-Yue Yang, Yao Wang, Wen-Hao Zhou, Xiao-Wei Wang, Xian-Min Jin
Summary: This study experimentally demonstrates the inhibition and reconstruction of Zener tunneling in photonic honeycomb lattices. By structurally controlling Zener tunneling, the coherence of photons is protected, paving the way for flexible quantum engineering of large-scale artificial quantum materials.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
B. R. Isanaka, T. Mukhopadhyay, R. K. Varma, V. Kushvaha
Summary: This study proposes a method using machine learning to identify failure patterns in honeycomb lattice structures and optimize material utilization and mechanical performance through local strengthening. The results demonstrate that increasing the elastoplastic properties and lowering Young's modulus of the material can significantly enhance the failure strength and energy absorption capacity of the lattice structure.
Article
Optics
Xiuying Liu, Frane Lunic, Daohong Song, Zhixuan Dai, Shiqi Xia, Liqin Tang, Jingjun Xu, Zhigang Chen, Hrvoje Buljan
Summary: Pseudospins arising from valley degrees of freedom in photonic structures have become a powerful tool for manipulating the flow of light, allowing for wavepacket self-rotation induced by Berry phase and resulting in Zitterbewegung oscillations. The frequency of Zitterbewegung is proportional to the gap size, while the helicity of self-rotation is valley-dependent, correlated with the Berry curvature. These findings provide new insights into the Zitterbewegung phenomenon from a topological perspective and have potential applications in other platforms such as 2D Dirac materials and ultracold atoms.
LASER & PHOTONICS REVIEWS
(2021)
Article
Quantum Science & Technology
Hong-Mei Li, Guo-Mo Zeng
Summary: The quantum walks of a three-boson system on a one-dimensional lattice were investigated using the Bose-Hubbard model with two- and three-body interactions. The study focused on the formation of particle pairs and trios for different initial states, as well as the variations of correlations and density distribution with interaction strength.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Physics, Multidisciplinary
I. Arnquist, N. Avalos, D. Baxter, X. Bertou, N. Castello-Mor, A. E. Chavarria, J. Cuevas-Zepeda, J. Cortabitarte Gutierrez, J. Duarte-Campderros, A. Dastgheibi-Fard, O. Deligny, C. De Dominicis, E. Estrada, N. Gadola, R. Gaior, T. Hossbach, L. Iddir, L. Khalil, B. Kilminster, A. Lantero-Barreda, I. Lawson, S. Lee, A. Letessier-Selvon, P. Loaiza, A. Lopez-Virto, A. Matalon, S. Munagavalasa, K. J. McGuire, P. Mitra, D. Norcini, G. Papadopoulos, S. Paul, A. Piers, P. Privitera, K. Ramanathan, P. Robmann, M. Settimo, R. Smida, R. Thomas, M. Traina, I. Vila, R. Vilar, G. Warot, R. Yajur, J-P. Zopounidis
Summary: We present the constraints on sub-GeV dark matter particles interacting with electrons obtained from the initial operation of the DAMIC-M detectors underground. By utilizing the charge-coupled devices (CCDs) of DAMIC-M, which have subelectron charge resolution and low dark current, we conducted a search for dark-matter-induced ionization signals above the detector dark current in CCD pixels with charge up to 7e-. Our analysis places limits on dark matter particles in the mass range of 0.53 to 1000 MeV/c2, excluding previously unexplored regions of parameter space for ultralight and heavy mediator interactions in the mass ranges [1.6, 1000] MeV/c2 and [1.5, 15.1] MeV/c2, respectively.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Particles & Fields
Passant Ali, Astrid Eichhorn, Martin Pauly, Michael M. Scherer
Summary: The realization of global symmetries in quantum-gravity-matter-systems has significant phenomenological implications. Within an asymptotically safe context, it is suggested that discrete global symmetries of the form Z(n), n > 4, cannot be realized in a near-perturbative regime, while an effective-field-theory approach to quantum gravity may feature such symmetries and provide a mechanism for generating mass hierarchies in the infrared without additional fine-tuning.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Jan Attig, Jinhong Park, Michael M. Scherer, Simon Trebst, Alexander Altland, Achim Rosch
Summary: This paper explores the universal physical properties of moire materials using statistical principles, focusing on the Fermi surface flat bands in moire structures, and examines the competition outcomes in these systems.
Article
Multidisciplinary Sciences
Lede Xian, Martin Claassen, Dominik Kiese, Michael M. Scherer, Simon Trebst, Dante M. Kennes, Angel Rubio
Summary: The study reveals that twisted bilayer MoS2 can achieve a strongly asymmetric p(x)-p(y) Hubbard model with two almost entirely dispersionless bands due to destructive interference. The emergence of these dispersionless bands is similar to the flat bands in Lieb or Kagome lattices, and coexists with the general band flattening caused by moire interference.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Michael M. Scherer, Dante M. Kennes, Laura Classen
Summary: Experimental demonstrations of tunable correlation effects in magic-angle twisted bilayer graphene and other twisted two-dimensional materials have been achieved. By manipulating interaction, its range, and filling experimentally, we have investigated Fermi surface instabilities and resulting phases of matter in hetero-bilayer TMDs.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Multidisciplinary
Lennart Klebl, Ammon Fischer, Laura Classen, Michael M. Scherer, Dante M. Kennes
Summary: Evidence of correlated insulating and superconducting phases in tWSe2 was reported. A functional renormalization group approach was used to investigate their origin and interplay. The phase diagram as a function of filling and perpendicular electric field was mapped, revealing mixed-parity superconducting order parameters with s/f-wave and topological d/p-wave symmetry.
PHYSICAL REVIEW RESEARCH
(2023)
Proceedings Paper
Computer Science, Theory & Methods
Maniraman Periyasamy, Nico Meyer, Christian Ufrecht, Daniel D. Scherer, Axel Plinge, Christopher Mutschler
Summary: The representation of high dimensional data in quantum circuits is a challenge, and this study proposes a novel encoding pattern called "incremental data-uploading" that achieves a better data representation with minimal pre-processing requirements.
2022 IEEE INTERNATIONAL CONFERENCE ON QUANTUM COMPUTING AND ENGINEERING (QCE 2022)
(2022)
Article
Materials Science, Multidisciplinary
Nico Gneist, Laura Classen, Michael M. Scherer
Summary: This study investigates the interplay of strong electronic correlations and geometric frustration by studying the triangular lattice Hubbard model. Using a truncated-unity functional renormalization group approach, the competing instabilities of interacting electrons near a filling where the density of states has a Van Hove singularity are explored. The research reveals rich phase diagrams, including tendencies to spin-density-wave order and unconventional pairing, which can lead to topological superconductivity.
Article
Materials Science, Multidisciplinary
Igor F. Herbut, Michael M. Scherer
Summary: The article examines a (2+1)-dimensional Gross-Neveu-Yukawa field theory with eight-component Dirac fermions and two triplets of order parameters. By deriving a unitary transformation and analyzing the renormalization group flow of the coupling constants, the characteristics of multicritical behavior are studied.
Article
Materials Science, Multidisciplinary
Shouryya Ray, Bernhard Ihrig, Daniel Kruti, John A. Gracey, Michael M. Scherer, Lukas Janssen
Summary: This study characterizes the quantum critical behavior of the Gross-Neveu-SO(3) universality class using three complementary field-theoretical techniques, and obtains estimates for the correlation-length exponent, order-parameter anomalous dimension, and fermion anomalous dimension. The results are obtained by averaging over different techniques and the uncertainty displayed represents the degree of consistency among the methods.
Article
Physics, Multidisciplinary
Dominik Kiese, Finn Lasse Buessen, Ciaran Hickey, Simon Trebst, Michael M. Scherer
PHYSICAL REVIEW RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
J. Ehrlich, C. Honerkamp
Article
Materials Science, Multidisciplinary
Laura Classen, Andrey Chubukov, Carsten Honerkamp, Michael M. Scherer
Article
Materials Science, Multidisciplinary
Lukas Janssen, Wei Wang, Michael M. Scherer, Zi Yang Meng, Xiao Yan Xu
Article
Physics, Multidisciplinary
Shao-Kai Jian, Michael M. Scherer, Hong Yao
PHYSICAL REVIEW RESEARCH
(2020)
Article
Physics, Multidisciplinary
Claudia Merger, Timo Reinartz, Stefan Wessel, Carsten Honerkamp, Andreas Schuppert, Moritz Helias
Summary: Networks with fat-tailed degree distributions often have hubs, nodes with high numbers of connections, crucial to the transition into a globally ordered network state. Higher order interaction effects counteract the self-feedback on hubs, highlighting their importance for the distinct onset of local versus global order in the network. This mechanism may be relevant for other systems with a strongly hierarchical underlying network structure.
PHYSICAL REVIEW RESEARCH
(2021)