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Št. zadetkov: 4
Phantom Bethe excitations and spin helix eigenstates in integrable periodic and open spin chains
Vladislav Popkov, Xin Zhang, Andreas Klümper
Izvirni znanstveni članek
Oznake: kvantna mehanika;quantum mechanics;
We demonstrate the existence of a special chiral “phantom” mode with some analogy to a Goldstone mode in the anisotropic quantum XXZ Heisenberg spin chain. The phantom excitations contribute zero energy to the eigenstate, but a finite fixed quantum of momentum $k_0$. The mode exists not due to symme ...
Leto: 2021 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Universality in the relaxation of spin helices under XXZ spin-chain dynamics
Vladislav Popkov, Marko Žnidarič, Xin Zhang
Izvirni znanstveni članek
Oznake: statistična fizika;fizika kondenzirane snovi;spinske verige;statistical physics;condensed matter physics;spin chains;
We describe the dynamics of a transverse spin-helix state—a product state with spatially rotating magnetization—under XXZ spin chain evolution. Due to experimental relevance we especially focus on magnetization dynamics. At long times the $U$(1) symmetry of the Hamiltonian is restored, leading to th ...
Leto: 2023 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Investigation of cutting performance of a circular saw blade based on ANSYS/LS-DYNA
Zhiwen Wang, Qingliang Zeng, Zhenguo Lu, Lirong Wan, Xin Zhang, Zhihai Liu
Izvirni znanstveni članek
Oznake: circular saw blades;rock damage;cutting forces;stress;
The circular saw blade is widely applied in rock processing; its cutting performance significantly impacts rock processing. Therefore, the numerical simulation model of rock cutting with the flexible circular saw blade has been established to investigate the effects of cutting parameters on the stre ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Detection of outer wall defects on steel pipe using an encircling Rotating electromagnetic Field Eddy Current (RFEC) technique
Xiaokang Yin, Zhuoyong Gu, Wei Wang, Xiaorui Zhang, Xin'an Yuan, Wei Li, Guoming Chen
Izvirni znanstveni članek
Oznake: non-destructive testing;rotating electromagnetic field;finite element;influencing factors;
In recent years, the Rotating electromagnetic Field Eddy Current (RFEC) testing technique has attracted widespread attention due to its various advantages for the inspection of tubular structures. However, most of the related work were focused on the detection of inner wall defects on metal pipes us ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 4
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