Artículo
Extremely broken generalized PT symmetry
Fecha de publicación:
10/2023
Editorial:
Springer
Revista:
Journal of Mathematical Chemistry
ISSN:
0259-9791
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We discuss some simple Hückel-like matrix representations of non-Hermitian operators with antiunitary symmetries that include generalized PT (parity transformation followed by time-reversal) symmetry. One of them exhibits extremely broken antiunitary symmetry (complex eigenvalues for all nontrivial values of the model parameter) because of the degeneracy of the operator in the Hermitian limit. These examples illustrate the effect of point-group symmetry on the spectrum of the non-Hermitian operators. We construct the necessary unitary matrices by means of simple graphical representations of the non-Hermitian operators.
Palabras clave:
ANTIUNITARY SYMMETRY
,
GROUP THEORY
,
PT SYMMETRY
,
UNITARY OPERATORS
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Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Citación
Fernández, Francisco Marcelo; Extremely broken generalized PT symmetry; Springer; Journal of Mathematical Chemistry; 61; 9; 10-2023; 1879-1887
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