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arXiv 0905.4633hep-th
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N=4超共形力学中的势

Potentials in N=4 superconformal mechanics

Stefano Bellucci, Sergey Krivonos

摘要:

从(超)共形对称的非线性实现出发,我们明确地证明,加入谐振子势的共形力学的作用并没有打破这些对称性,但修改(超)场的变换性质。我们还分析了在N=4的超对称力学中通过耦合辅助费米超场引入势的可能性。我们所考虑的新耦合并没有引入新的费米子自由度--所有额外的费米子都是纯粹的辅助费米子。新的玻色子分量具有一阶动力学项,因此它们充当自旋自由度。由此产生的系统包含,除了在玻色子部门的潜在的长期,一个非平凡的类自旋相互作用的费米子部门。本文构造的超共形力学在满$D(2,1;α)$超共形群下是不变的.这种不变性是不明显的,是在超场的修正(超)共形变换中实现的。

英文摘要:

Proceeding from nonlinear realizations of (super)conformal symmetries, we explicitly demonstrate that adding the harmonic oscillator potential to the action of conformal mechanics does not break these symmetries but modifies the transformation properties of the (super)fields. We also analyze the possibility to introduce potentials in N=4 supersymmetric mechanics by coupling it with auxiliary fermionic superfields. The new coupling we considered does not introduce new fermionic degrees of freedom - all our additional fermions are purely auxiliary ones. The new bosonic components have a first order kinetic term and therefore they serve as spin degrees of freedom. The resulting system contains, besides the potential term in the bosonic sector, a non-trivial spin-like interaction in the fermionic sector. The superconformal mechanics we constructed in this paper is invariant under the full $D(2,1;α)$ superconformal group. This invariance is not evident and is achieved within modified (super)conformal transformations of the superfields.

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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