Zobrazeno 1 - 10
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pro vyhledávání: '"Cheng Meng"'
We investigate (3+1)d topological orders in fermionic systems with an anomalous $\mathbb{Z}_{2N}^{\mathrm{F}}$ symmetry, where its $\mathbb{Z}_2^{\mathrm{F}}$ subgroup is the fermion parity. Such an anomalous symmetry arises as the discrete subgroup
Externí odkaz:
http://arxiv.org/abs/2411.05786
We construct a family of two-dimensional topological stabilizer codes on continuous variable (CV) degrees of freedom, which generalize homological rotor codes and the toric-GKP code. Our topological codes are built using the concept of boson condensa
Externí odkaz:
http://arxiv.org/abs/2411.04993
The form of the entanglement Hamiltonian varies with the parameters of the original system. Whether there is a singularity is the key problem for demonstrating/negating the universality of the relation between the entanglement spectrum and edge energ
Externí odkaz:
http://arxiv.org/abs/2410.10090
In many-body systems with U(1) global symmetry, the charge fluctuations in a subregion reveal important insights into entanglement and other global properties. For subregions with sharp corners, bipartite fluctuations have been predicted to exhibit a
Externí odkaz:
http://arxiv.org/abs/2408.16057
Incompressible insulating phases of electronic systems at partial filling of a lattice are often associated with charge ordering that breaks lattice symmetry. The resulting phases have an enlarged unit cell with an effective integer filling. Here we
Externí odkaz:
http://arxiv.org/abs/2408.03984
We explore a large $N$ generalization of the Kitaev model on the honeycomb lattice with a simple nearest-neighbor interacting Hamiltonian. In particular, we focus on the $\mathbb{Z}_4$ case with isotropic couplings, which is characterized by an exact
Externí odkaz:
http://arxiv.org/abs/2408.02046
Symmetry in mixed quantum states can manifest in two distinct forms: \textit{strong symmetry}, where each individual pure state in the quantum ensemble is symmetric with the same charge, and \textit{weak symmetry}, which applies only to the entire en
Externí odkaz:
http://arxiv.org/abs/2405.03639
Autor:
Ellison, Tyler, Cheng, Meng
The classification and characterization of topological phases of matter is well understood for ground states of gapped Hamiltonians that are well isolated from the environment. However, decoherence due to interactions with the environment is inevitab
Externí odkaz:
http://arxiv.org/abs/2405.02390
Autor:
Cai, Kang-Le, Cheng, Meng
Disorder operators are a type of non-local observables for quantum many-body systems, measuring the fluctuations of symmetry charges inside a region. It has been shown that disorder operators can reveal global aspects of many-body states that are oth
Externí odkaz:
http://arxiv.org/abs/2404.04334
We propose a "minimal" fractional topological insulator (mFTI), motivated by the recent experimental report on the signatures of FTI at total filling factor $\nu_{\rm tot} = 3$ in a transition metal dichalcogenide moir\'{e} system. The observed FTI a
Externí odkaz:
http://arxiv.org/abs/2403.07054