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arXiv 1503.00786hep-th
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一维$δ'$函数势相对论薛定谔方程的截断正则化解法

The Solution of the Relativistic Schrodinger Equation for the $δ'$-Function Potential in 1-dimension Using Cutoff Regularization

M. H. Al-Hashimi, A. M. Shalaby

摘要:

研究了一维空间中点粒子的相对论性薛定谔方程,势为δ函数的一阶导数。利用动量截断正则化方法研究了束缚态和散射态。初步计算表明,裸耦合常数的倒数是紫外发散的,由此得到的表达式不能按通常意义重整化。因此,已经开发了一个通用的程序,以获得不同的物理性质的系统。为了澄清和比较的目的,该程序首先用于非相对论性的情况。相对论情形下的结果表明,该系统的行为完全类似于δ函数势,这意味着它也具有与量子场论相同的特征,如渐近自由,在无质量极限下,它经历维度嬗变,并具有红外共形不动点。

英文摘要:

We study the relativistic version of Schrödinger equation for a point particle in 1-d with potential of the first derivative of the delta function. The momentum cutoff regularization is used to study the bound state and scattering states. The initial calculations show that the reciprocal of the bare coupling constant is ultra-violet divergent, and the resultant expression cannot be renormalized in the usual sense. Therefore a general procedure has been developed to derive different physical properties of the system. The procedure is used first on the non-relativistic case for the purpose of clarification and comparisons. The results from the relativistic case show that this system behaves exactly like the delta function potential, which means it also shares the same features with quantum field theories, like being asymptotically free, and in the massless limit, it undergoes dimensional transmutation and it possesses an infrared conformal fixed point.

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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