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arXiv 1104.1907hep-latnucl-th
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格点上的核Yukawa模型

The Nuclear Yukawa Model on a Lattice

F. de Soto, J. C. Angles d'Auriac, J. Carbonell

摘要:

本文给出了用标准格点方法得到的核Yukawa模型的量子场论结果。我们考虑了两个全同费米子通过标量介子交换相互作用的最简单情况。在淬灭近似下,用威尔逊费米子进行了计算。我们发现存在一个临界的耦合常数,超过这个常数,模型就不能数值求解。可获得的耦合常数的范围低于产生两体束缚态的阈值。获得了两体散射长度,并与非相对论结果进行了比较。

英文摘要:

We present the results of the quantum field theory approach to nuclear Yukawa model obtained by standard lattice techniques. We have considered the simplest case of two identical fermions interacting via a scalar meson exchange. Calculations have been performed using Wilson fermions in the quenched approximation. We found the existence of a critical coupling constant above which the model cannot be numerically solved. The range of the accessible coupling constants is below the threshold value for producing two-body bound states. Two-body scattering lengths have been obtained and compared to the non relativistic results.

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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