An investigation of the Casimir energy for a fermion coupled to the sine-Gordon soliton with parity decompositionS. S. Gousheh, A. Mohammadi and L. ShahkaramiEur. Phys. J. C, 74 8 (2014) 3020DOI: https://doi.org/10.1140/epjc/s10052-014-3020-2