Публикации

1. Z.D. Dimitrov, S.K. Varbev, K.J. Omar, A.A. Stefanov, E.S. Penev, T.M. Mishonov, Correlation between Tc and the Cu 4s Level Reveals the Mechanism of High-Temperature Superconductivity, Bulg. J. Phys. 38 (2011),106-112. 

2. V. S. Gerdjikov, D. M. Mladenov, A. A. Stefanov, S. K. Varbev, Integrable equations and recursion operators related to the affine Lie аlgebras A(1)r Math. Phys. 56, 052702 (2015). Q2-Scopus, Q2-Web of Science 

3. V. S. Gerdjikov, D. M. Mladenov, A. A. Stefanov, S. K. Varbev, Soliton equa tions related to the affine Kac-Moody algebra D(1)4 , Eur. Phys. J. Plus (2015) 130: 106. Q3-Scopus, Q2-Web of Science

4. V. S. Gerdjikov, D. M. Mladenov, A. A. Stefanov, S. K. Varbev, On MKdV equations related to the affine Kac-Moody algebra A(2) 5 , J. Geom. Symmetry Phys. 39 (2015) 17-31. Q4-Scopus 

5. V.S. Gerdjikov, D.M. Mladenov, A.A. Stefanov, and S.K. Varbev, MKdV equations related to the D(2)4 algebra, Rom. J. Phys. 61 (2016) 110-123. Q1-Scopus, Q2-Web of Science 

6. R. S. Kamburova, S. K. Varbev, M. T. Primatarowa, Interaction of solitons with impurities in anisotropic ferromagnetic chains, Phys. Lett. A 383(5), (2019), 471-476. Q2-Scopus, Q2-Web of Science 

7. S. Varbev, I. Boradjiev, H. Tonchev, H. Chamati, Dynamics of a periodic XY chain coupled to a photon mode, The European Physical Journal B, 93, 7 (2020) 131. Q3-Scopus, Q4-Web of Science 

8. V.S. Gerdjikov, D.M. Mladenov, A.A. Stefanov, and S.K. Varbev, The mKdV type equations related to A(1)5 and A(2)5 Kac-Moody algebras, Theoretical and Mathematical Physics 207 (2), 604-625 (2021). Q4-Web of Science 

9. S. Varbev, I. Boradjiev, R. Kamburova, and H. Chamati, Control of a qubit state by a soliton propagating through a Heisenberg spin chain, Phys. Rev. E 105, 034207 (2022). Q2-Scopus, Q1-Web of Science

10. A. Stefanov, S. Varbev, Breather and Rogue Wave Solutions of a New Three-Component System of Exactly Solvable NLEEs, Dynamics 2025, 5, 31. https://doi.org/10.3390/dynamics5030031