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arXiv 0901.1433hep-th
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自由阿贝尔2-形式规范理论中幂零对称的绝对反对易性

Absolute anticommutativity of the nilpotent symmetries in the Hamiltonian formalism: free Abelian 2-form gauge theory

R. P. Malik, B. P. Mandal, S. K. Rai

摘要:

利用著名的Curci-Ferrari(CF)型约束,在4维(3 + 1)自由阿贝尔2-形式规范理论的拉格朗日描述中,得到了离壳幂零和绝对反对易(反)BRST以及(反)co-BRST对称变换.我们表明,上述CF型条件,这原来是次要的约束的理论,保持不变的时间演化的上述2-形式规范系统的哈密顿公式。这种时间演化不变性(i)在物理上确保了BRST与反BRST以及co-BRST与反co-BRST对称变换的线性独立性,(ii)在证明离壳幂零(反)BRST以及(反)co-BRST对称变换的绝对反交换性时,提供了上述CF类型限制背后的逻辑原因。

英文摘要:

The celebrated Curci-Ferrari (CF) type of restrictions are invoked to obtain the off-shell nilpotent and absolutely anticommuting (anti-) BRST as well as (anti-) co-BRST symmetry transformations in the context of the Lagrangian description of the physical four (3 + 1)-dimensional (4D) free Abelian 2-form gauge theory. We show that the above CF type conditions, which turn out to be the secondary constraints of the theory, remain invariant with respect to the time-evolution of the above 2-form gauge system in the Hamiltonian formulation. This time-evolution invariance (i) physically ensures the linear independence of the BRST versus anti-BRST as well as co-BRST versus anti-co-BRST symmetry transformations, and (ii) provides a logical reason behind the imposition of the above CF type restrictions in the proof of the absolute anticommutativity of the off-shell nilpotent (anti-) BRST as well as (anti-) co-BRST symmetry transformations.

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