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arXiv 1411.2010hep-latnucl-th
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具有扭曲边界条件的重子系统

Two-Baryon Systems with Twisted Boundary Conditions

Zohreh Davoudi

摘要:

当任意扭曲边界条件施加在有限体积波函数上时,我导出了有限体积中两个相互作用重子能量本征值的最一般量子化条件。这些量子化条件,连同实验已知的散射参数的两个核子系统中的耦合3S 1 - 3D 1通道,以证明预期的效果的扭曲边界条件的选择上的频谱的氘核。它示出的数量级减少的有限体积修正的氘核结合能出现在适度的体积与质子和中子上的边界条件的适当选择,或通过平均的结果的周期性和反周期性的边界条件。这些观测结果意味着,在即将到来的格点量子色动力学计算中,在小到~(9[fm])^3的(空间)体积下,用物理轻夸克质量来确定氘核的结合能,可以达到百分之几的精度。参考文献[1]中详细介绍了本次演讲中回顾的结果。

英文摘要:

I derive the most general quantization condition for energy eigenvalues of two interacting baryons in a finite cubic volume when arbitrary twisted boundary conditions are imposed on their finite-volume wavefunctions. These quantization conditions are used, along with experimentally known scattering parameters of two-nucleon systems in the coupled 3S1-3D1 channels, to demonstrate the expected effect of a selection of twisted boundary conditions on the spectrum of the deuteron. It is shown that an order of magnitude reduction in the finite-volume corrections to the deuteron binding energy arise in moderate volumes with a proper choice of boundary conditions on the proton and the neutron, or by averaging the result of periodic and anti-periodic boundary conditions. These observations mean that a sub-percent accuracy can be achieved in the determination of the deuteron binding energy at (spatial) volumes as small as ~(9[fm])^3 in upcoming lattice QCD calculations of this nucleus with physical light-quark masses. The results reviewed in this talk are presented in details in Ref. [1].

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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