Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-05-19
J. Math. Phys. 51:052301,2010
Physics
High Energy Physics
High Energy Physics - Theory
36 pages, no figure, minor corrections
Scientific paper
A superspace approach to the Becchi-Rouet-Stora-Tyutin (BRST) formalism for the Yang-Mills theory on an n-dimensional unit sphere, S_1^{n}, is developed in a manifestly covariant manner based on the rotational supersymmetry characterized by the supergroup OSp(n+1|2). This is done by employing an (n+2)-dimensional unit supersphere, S_1^{n|2}, parametrized by n commutative and 2 anticommutative coordinate variables so that it includes S_1^{n} as a subspace and realizes the OSp(n+1|2) supersymmetry. In this superspace formulation, referred to as the supersphere formulation, the so-called horizontality condition is concisely expressed in terms of the rank-3 field strength tensor of a Yang-Mills superfield on S_1^{n|2}. The supersphere formulation completely covers the BRST gauge-fixing procedure for the Yang-Mills theory on S_1^{n} provided by us [R. Banerjee and S. Deguchi, Phys. Lett. B 632 (2006) 579, arXiv:hep-th/0509161]. Furthermore, this formulation admits the (massive) Curci-Ferrari model defined on S_1^{n}, describing the gauge-fixing and mass terms on S_1^{n} together as a mass term on S_1^{n|2}.
Banerjee Rabin
Deguchi Shinichi
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