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Your search keyword '"Ojeda-Guillén, D."' showing total 2 results
Start Over Author "Ojeda-Guillén, D." Publication Year Range Last 3 years Publication Type Academic Journals Journal journal of mathematical physics Database Academic Search Index
2 results on '"Ojeda-Guillén, D."'

1. Retraction: "Algebraic approach to the Tavis–Cummings model with three modes of oscillation" [J. Math. Phys. 59, 073506 (2018)].

Author

Choreño, E., Ojeda-Guillén, D., and Granados, V. D.

Subjects
*MATHEMATICS, *OSCILLATIONS, *UNITARY transformations, *COUPLING constants
Abstract

In particular, the main problem of the Bogoliubov transformation comes when, with the parameters HT r ht and HT ht , one tries to verify if the transformation is unitary. In fact, if one computes the commutators between HT A 1, A 1† ht and HT A 2, A 2† ht , an expression similar to Eq. (3) is obtained. [Extracted from the article]

Published
2023
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2. Algebraic approach and Berry phase of a Hamiltonian with a general SU(1, 1) symmetry.

Author

Choreño, E., Valencia, R., and Ojeda-Guillén, D.

Subjects
*GEOMETRIC quantum phases, *SIMILARITY transformations, *LIE algebras, *SYMMETRY
Abstract

In this paper, we study a general Hamiltonian with a linear structure given in terms of two different realizations of the SU(1, 1) group. We diagonalize this Hamiltonian by using the similarity transformations of the SU(1, 1) and SU(2) displacement operators performed to the su(1, 1) Lie algebra generators. Then, we compute the Berry phase of a general time-dependent Hamiltonian with this general SU(1, 1) linear structure. [ABSTRACT FROM AUTHOR]

Published
2021
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