2001/12/31 by G. E. Volovik
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #cond-mat #gr-qc #hep-ph
paper · pdf · doi:10.1134/1.1466475
published as Pisma Zh.Eksp.Teor.Fiz. 75 (2002) 63-66; JETP Lett. 75 (2002) 55-58 · LaTeX file, 8 pages, no figures, version accepted in JETP Letters
openalex publication_date 2002/01/01 · arxiv created 2002/01/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss fermion zero modes within the 3+1 brane, i.e., the domain wall between the two vacua in 4+1 spacetime. We do not assume relativistic invariance in 4+1 spacetime or any special form of the 4+1 action. The only input is that the fermions in bulk are fully gapped and are described by a nontrivial momentum-space topology. Then the 3+1 wall between such vacua contains chiral 3+1 fermions. The bosonic collective modes in the wall form the gauge and gravitational fields. In principle, this universality class of fermionic vacua can contain all the ingredients of the Standard Model and gravity.