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arXiv 2407.16618cond-mat.quant-gas
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环上强排斥自旋混合物的项链拟设

Necklace Ansatz for strongly repulsive spin mixtures on a ring

Gianni Aupetit-Diallo, Giovanni Pecci, Artem Volosniev, Mathias Albert, Anna Minguzzi, Patrizia Vignolo

AI总结:

提出项链拟设替代Bethe拟设,通过周期性条件与约束对角化,高效求解环上强排斥自旋混合物的精确低能多体基,适用于SU(κ)与对称性破缺系统。

摘要:

我们提出了一种替代Bethe拟设方法,用于环上强相互作用的费米子(或玻色子)混合物。从单组分无相互作用费米子(或强相互作用玻色子)的已知解出发,我们显式地对自旋构型的振幅施加周期性条件。这大幅减少了独立复振幅的数量,我们通过有效哈密顿量的约束对角化来确定这些振幅。该过程使我们能够为具有大量粒子的混合物获得精确低能多体解的完整基,既适用于SU(κ)对称系统,也适用于对称性破缺系统。

英文摘要:

We propose an alternative to the Bethe Ansatz method for strongly-interacting fermionic (or bosonic) mixtures on a ring. Starting from the knowledge of the solution for single-component non-interacting fermions (or strongly-interacting bosons), we explicitly impose periodic condition on the amplitudes of the spin configurations. This reduces drastically the number of independent complex amplitudes that we determine by constrained diagonalization of an effective Hamiltonian. This procedure allows us to obtain a complete basis for the exact low-energy many-body solutions for mixtures with a large number of particles, both for $SU(κ)$ and symmetry-breaking systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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