Energy, central charge, and the BPS bound for (1+1)-dimensional supersymmetric solitons
Aug, 1998Citations per year
Abstract:
We consider one-loop quantum corrections to soliton energies and central charges in the supersymmetric and sine-Gordon models in 1+1 dimensions. In both models, we unambiguously calculate the correction to the energy in a simple renormalization scheme and obtain , in agreement with previous results. Furthermore, we show that there is an identical correction to the central charge, so that the BPS bound remains saturated in the one-loop approximation. We extend these results to arbitrary 1+1 dimensional supersymmetric theories.Note:
- 15 pages, RevTeX; v2: generalized energy result, added minor clarifications, and fixed typos; v3: more minor clarifications and corrections; v4: fixed factor of 2 in eq. (25); v5: fixed minor error in eq. (55) Report-no: MIT-CTP #2775 Journal-ref: Nucl.Phys. B544 (1999) 432-447
- phi**n model: 4
- sine-Gordon model
- dimension: 2
- soliton
- energy
- central charge
- perturbation theory: higher-order
- renormalization
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