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We study the particle-hole symmetry in the Hubbard model using ultracold fermionic atoms in an optical lattice. We demonstrate the mapping between charge and spin degrees of freedom and, in particular, show the occurrence of a state with…

量子气体 · 物理学 2020-01-15 M. Gall , C. F. Chan , N. Wurz , M. Köhl

The set of particle-hole ring diagrams for a many-fermion system in two dimensions is studied. The complex-valued polarization function is derived in detail and shown to be expressible in terms of square-root functions. For a…

核理论 · 物理学 2015-06-22 N. Kaiser

Nodal loop appears when two bands, typically one electron-like and one hole-like, are crossing each other linearly along a one-dimensional manifold in the reciprocal space. Here we propose a new type of nodal loop which emerges from…

材料科学 · 物理学 2017-08-23 Si Li , Zhi-Ming Yu , Ying Liu , Shan Guan , Shan-Shan Wang , Xiaoming Zhang , Yugui Yao , Shengyuan A. Yang

Multicomponent quantum Hall effect, under the interplay between intercomponent and intracomponent correlations, leads us to new emergent topological orders. Here, we report the theoretical discovery of fractional quantum hall effect of…

强关联电子 · 物理学 2022-07-01 Tian-Sheng Zeng

We revisit the sharp-interface continuum thermodynamics of two-phase multicomponent fluid systems with interfacial mass. Since the published work is not fully consistent, we provide a rigorous derivation of the local balance equations and…

流体动力学 · 物理学 2022-08-15 Dieter Bothe

Entanglement entropy under a particle bipartition provides complementary information to mode entanglement as it is sensitive to interactions and particle statistics at leading order and does not depend on any externally imposed length…

In contrast to ordinary symmetries, supersymmetry interchanges bosons and fermions. Originally proposed as a symmetry of our universe, it still awaits experimental verification. Here we theoretically show that supersymmetry emerges…

强关联电子 · 物理学 2014-05-05 Tarun Grover , D. N. Sheng , Ashvin Vishwanath

We consider interface fluctuations on a two-dimensional layered lattice where the couplings follow a hierarchical sequence. This problem is equivalent to the diffusion process of a quantum particle in the presence of a one-dimensional…

凝聚态物理 · 物理学 2009-10-28 Ferenc Igloi , Ferenc Szalma

The evolution of the interface propagation in a slowly rotating half-filled horizontal cylinder is studied using MRI. Initially, the cylinder contains two axially segregated bands of small and large particles with a sharp interface. The…

软凝聚态物质 · 物理学 2009-10-31 Gerald H. Ristow , Masami Nakagawa

The effects of short-range fermion-fermion interactions on the low-energy properties of rhombohedral trilayer graphene are comprehensively investigated using the momentum-shell renormalization group method. We take into account all one-loop…

强关联电子 · 物理学 2025-03-12 Qiao-Chu Zhang , Jing Wang

Finite fermion systems are known to exhibit shell structure in the weakly-interacting regime, as well known from atoms, nuclei, metallic clusters or even quantum dots in two dimensions. All these systems have in common that the particle…

量子气体 · 物理学 2020-11-11 J. Bengtsson , G. Eriksson , J. Josefi , J. C. Cremon , S. M. Reimann

We carefully study how the fermion-fermion interactions affect the low-energy states of a two-dimensional spin-$1/2$ fermionic system on the kagom\'{e} lattice with a quadratic band crossing point. With the help of the renormalization group…

强关联电子 · 物理学 2021-04-07 Ya-Hui Zhai , Jing Wang

Scale invariance emerges and plays an important role in strongly correlated many-body systems such as critical regimes nearby phase transitions and the unitary Fermi gases. Discrete scaling symmetry also manifests itself in quantum few-body…

量子气体 · 物理学 2016-08-24 Shujin Deng , Zhe-Yu Shi , Pengpeng Diao , Qianli Yu , Hui Zhai , Ran Qi , Haibin Wu

We consider a hypothesis in which classical space-time emerges from information exchange (interactions) between quantum fluctuations in the gravity theory. In this picture, a line element would arise as a statistical average of how…

高能物理 - 理论 · 物理学 2019-09-04 Anna Karlsson

We study the tunneling between two quantum Hall systems, along a quasi one-dimensional interface. A detailed analysis relates microscopic parameters, characterizing the potential barrier, with the effective field theory model for the…

凝聚态物理 · 物理学 2009-10-22 D. G. Barci , L. Moriconi

This article investigates the properties of a few interacting particles trapped in a few wells and how these properties change under adiabatic tuning of interaction strength and inter-well tunneling. While some system properties are…

量子物理 · 物理学 2017-05-18 N. L. Harshman

The emergence of fractonic topological phases and novel universality classes for quantum dynamics highlights the importance of dipolar symmetry in condensed matter systems. In this work, we study the properties of symmetry-breaking phases…

强关联电子 · 物理学 2023-11-01 Amogh Anakru , Zhen Bi

Pseudo-Hermitian field theories possess a global continuous ``similarity'' symmetry, interconnecting the theories with the same physical particle content and an identical mass spectrum. In their regimes with real spectra, within this family…

高能物理 - 理论 · 物理学 2024-01-12 Maxim N. Chernodub , Peter Millington

We study the energetics and dispersion of anomalous dimers that are induced by the Pauli blocking effect in a quantum Fermi gas of majority atoms near interspecies resonances. Unlike in vacuum, we find that both the sign and magnitude of…

量子气体 · 物理学 2011-07-06 Jun-Liang Song , Fei Zhou

The identification of the interfacial molecules in fluid-fluid equilibrium is a long-standing problem in the area of simulation. We here propose a new point of view, making use of concepts taken from the field of computational geometry,…

软凝聚态物质 · 物理学 2009-04-30 Florencio Balboa Usabiaga , Daniel Duque