TY - JOUR

T1 - The Chern-Simons coefficient in supersymmetric Yang-Mills Chern-Simons theories

AU - Kao, Hsien Chung

AU - Lee, Kimyeong

AU - Lee, Taejin

N1 - Funding Information:
The work by H.K. is supportedb y NationalS cienceC ouncil,T aiwan( GrantN o. NSC84-2112-M-001-022). The work by K.L. is supportedin part by US DOE, the NSF PresidentiaYl oung Investigatopr rograma nd the Alfred P. Sloan FoundationT. he work by T.L. is supportedb y Korea ScienceE ngineeringF oundation (throught heC enterf or TheoreticaPl hysics,S NU) andt heB asic ScienceR esearchIn stituteP rogramM, inistry of EducationK, orea (No. BSRI-94-2401.)

PY - 1996/4/18

Y1 - 1996/4/18

N2 - We study one-loop corrections to the Chern-Simons coefficient κ = k/4π in N = 1, 2, 3 supersymmetric Yang-Mills Chern-Simons systems. In the pure bosonic case, the shift of the parameter k is known to be k → k + cv, where cv is the quadratic Casimir of the gauge group. In the N = 1 case, the fermionic contribution cancels the bosonic contribution by half and the shift is k → k + cv/2, making the theory anomalous if cv is odd. In the N = 2, 3 cases, the fermionic contribution cancels the bosonic contribution completely and there is no correction. We also calculate the mass corrections, and show that the supersymmetry is preserved. As the matter fields decouple from the gauge field in the pure Chern-Simons limit, this work sheds some light on the regularization dependency of the correction in pure Chern-Simons systems. We also discuss the implication to the case when the gauge symmetry is spontaneously broken by the Higgs mechanism.

AB - We study one-loop corrections to the Chern-Simons coefficient κ = k/4π in N = 1, 2, 3 supersymmetric Yang-Mills Chern-Simons systems. In the pure bosonic case, the shift of the parameter k is known to be k → k + cv, where cv is the quadratic Casimir of the gauge group. In the N = 1 case, the fermionic contribution cancels the bosonic contribution by half and the shift is k → k + cv/2, making the theory anomalous if cv is odd. In the N = 2, 3 cases, the fermionic contribution cancels the bosonic contribution completely and there is no correction. We also calculate the mass corrections, and show that the supersymmetry is preserved. As the matter fields decouple from the gauge field in the pure Chern-Simons limit, this work sheds some light on the regularization dependency of the correction in pure Chern-Simons systems. We also discuss the implication to the case when the gauge symmetry is spontaneously broken by the Higgs mechanism.

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U2 - 10.1016/0370-2693(96)00119-0

DO - 10.1016/0370-2693(96)00119-0

M3 - Article

AN - SCOPUS:0002174721

SN - 0370-2693

VL - 373

SP - 94

EP - 99

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -