1. Departamento de Física Teórica, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, CEP. 20550-013, Rio de Janeiro, RJ, Brazil
2. Department of Physics, Zhejiang University of Technology, Hong Zhou, China
3. Department of Physics, Baylor University, Waco, Texas 76798, USA
4. Institute of Mathematics, The Federal University of Rio de Janeiro, Caixa Postal 68530, CEP. 21945-970, Rio de Janeiro, RJ, Brazil