| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Salamanca, Dept Fis Fundamental, Salamanca - Spain
[2] Univ Fed ABC, CMCC, Santo Andre, SP - Brazil
[3] Tomsk State Univ, Phys Dept, Tomsk - Russia
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Physics Letters B; v. 797, OCT 10 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
In this letter the fractional fermion number of thick domain walls is computed. The analysis is achieved by developing the heat kernel expansion of the spectral eta function of the Dirac Hamiltonian governing the fermionic fluctuations around the domain wall. A formula is derived showing that a non null fermion number is always accompanied by a Hall conductivity induced on the wall. In the limit of thin and impenetrable walls the chiral bag boundary conditions arise, and the Hall conductivity is computed for this case as well. (C) 2019 The Authors. Published by Elsevier B.V. (AU) | |
| FAPESP's process: | 17/50294-1 - Quantum field theory in Dirac materials |
| Grantee: | Dmitry Vasilevich |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/03319-6 - Non perturbative methods in quantum theory and QFT and their application to actual physical problems |
| Grantee: | Dmitri Maximovitch Guitman |
| Support Opportunities: | Research Projects - Thematic Grants |