4 papers
On the Interpretation of the 'Extra' Variables in the Hurwitz Transformation
Le Van Hoang, Nguyen Thanh Son
The Hurwits transformation is generalized by introducing three new variables called 'extra'. Interpretation of these extra variables allows us to establish relation between isotrop…
Isospin Separation of Hidden Non-Abelian Monopole
Le Van Hoang, Nguyen Thanh Son
The scheme of isospin separation is suggested for the equation describing the five-dimensional 'charge-dyon' system in a non-Abelian SU(2) model. As a result, we obtain the Schrodi…
Exact Solution of Two-Dimensional Screened Donor State in a Magnetic Field
Le Van Hoang, Le Tran The Duy, Hoang Do Ngoc Tram +2
The use of Levi-Civita transformation allows us to formulate the problem of two-dimensional screened donor states in a magnetic field as that of two-dimensional anharmonic oscillat…
Algebraic Representation of Many-Particle Coulomb Green Function and Application in Atomic Calculations
Nguyen Hoang Quoc, Nguyen Ngoc Ty, Le Van Hoang +1
Basing on the relation between the Coulomb Green function and the Green function of harmonic oscillator, the algebraic representation of the many-particle Coulomb Green function in…