The scattering matrix for nonlocal field interactionsThe covariant,
unitary and causal S-
matrix for nonlocal relativistic quantum field theories
Unitary transform and subadditivity condition for composite and noncomposite systems an analogous density
matrix for the single-qudit state of a four-level atom. We perform the global
unitary Construction of the scattering matrix in the quantum theory of interacting fields-products) which define a relativistically covariant,
unitary, and causal scattering
matrix for locally
Study of Non-Autonomous Equations in the Theory of Gyroscopes solid-state described by the system of ODE of the fourth order with normal
matrix.
Relativistically covariant chronological ordering of interaction lagrangians for these functions, which guarantees that the scattering
matrix is
unitary, covariant, and causal. The explicit form
Superconductivity of twisted double bi-layer graphene in chiral model parameter the
unitary SU(2) -
matrix U with the kink-like (or domain wall) structure for the description
Application of Matrix Decompositions for Matrix Canonization, singular, or ill conditioned SLAEs using
matrix canonization is considered. A modification of an existing
On a method for studying the norm and the stability of solutionsWe present a new method (the method of
unitary transformations), which differs from the existing