2 papers
hep-th2025
Chiral anomaly in inhomogeneous systems with nontrivial momentum space topology
Praveen D. Xavier, M. A. Zubkov
We consider the chiral anomaly for systems with a wide class of Hermitian Dirac operators in 4D Euclidean spacetime. We suppose that is not necessarily linear in derivat…
cond-mat.mes-hall2025
Topological invariant responsible for the stability of the Fermi surfaces in non-homogeneous systems
M. A. Zubkov
The topological invariant responsible for the stability of Fermi point/Fermi surface in homogeneous systems is expressed through the one particle Green function, which depends on m…