Non-Hermitian oscillators with Td symmetry
- Autores
- Amore, Paolo; Fernández, Francisco Marcelo; Garcia, Javier
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We analyse some PT-symmetric oscillators with Td symmetry that depend on a potential parameter g. We calculate the eigenvalues and eigenfunctions for each irreducible representation and for a range of values of g. Pairs of eigenvalues coalesce at exceptional points gc; their magnitude roughly decreasing with the magnitude of the eigenvalues. It is difficult to estimate whether there is a phase transition at a nonzero value of g as conjectured in earlier papers. Group theory and perturbation theory enable one to predict whether a given space-time symmetry leads to real eigenvalues for sufficiently small nonzero values of g.
Fil: Amore, Paolo. Universidad de Colima; México
Fil: Fernández, Francisco Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Garcia, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina - Materia
-
Multidimensional Systems
Non-Hermitian Hamiltonian
Point-Group Symmetry
Pt-Symmetry
Space-Time Symmetry - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/37673
Ver los metadatos del registro completo
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Non-Hermitian oscillators with Td symmetryAmore, PaoloFernández, Francisco MarceloGarcia, JavierMultidimensional SystemsNon-Hermitian HamiltonianPoint-Group SymmetryPt-SymmetrySpace-Time Symmetryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We analyse some PT-symmetric oscillators with Td symmetry that depend on a potential parameter g. We calculate the eigenvalues and eigenfunctions for each irreducible representation and for a range of values of g. Pairs of eigenvalues coalesce at exceptional points gc; their magnitude roughly decreasing with the magnitude of the eigenvalues. It is difficult to estimate whether there is a phase transition at a nonzero value of g as conjectured in earlier papers. Group theory and perturbation theory enable one to predict whether a given space-time symmetry leads to real eigenvalues for sufficiently small nonzero values of g.Fil: Amore, Paolo. Universidad de Colima; MéxicoFil: Fernández, Francisco Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Garcia, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaAcademic Press Inc Elsevier Science2015-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37673Amore, Paolo; Fernández, Francisco Marcelo; Garcia, Javier; Non-Hermitian oscillators with Td symmetry; Academic Press Inc Elsevier Science; Annals of Physics (New York); 353; 2-2015; 231-2580003-4916CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.aop.2014.11.018info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0003491614003388info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:54:33Zoai:ri.conicet.gov.ar:11336/37673instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-12 09:54:33.877CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Non-Hermitian oscillators with Td symmetry |
| title |
Non-Hermitian oscillators with Td symmetry |
| spellingShingle |
Non-Hermitian oscillators with Td symmetry Amore, Paolo Multidimensional Systems Non-Hermitian Hamiltonian Point-Group Symmetry Pt-Symmetry Space-Time Symmetry |
| title_short |
Non-Hermitian oscillators with Td symmetry |
| title_full |
Non-Hermitian oscillators with Td symmetry |
| title_fullStr |
Non-Hermitian oscillators with Td symmetry |
| title_full_unstemmed |
Non-Hermitian oscillators with Td symmetry |
| title_sort |
Non-Hermitian oscillators with Td symmetry |
| dc.creator.none.fl_str_mv |
Amore, Paolo Fernández, Francisco Marcelo Garcia, Javier |
| author |
Amore, Paolo |
| author_facet |
Amore, Paolo Fernández, Francisco Marcelo Garcia, Javier |
| author_role |
author |
| author2 |
Fernández, Francisco Marcelo Garcia, Javier |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Multidimensional Systems Non-Hermitian Hamiltonian Point-Group Symmetry Pt-Symmetry Space-Time Symmetry |
| topic |
Multidimensional Systems Non-Hermitian Hamiltonian Point-Group Symmetry Pt-Symmetry Space-Time Symmetry |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We analyse some PT-symmetric oscillators with Td symmetry that depend on a potential parameter g. We calculate the eigenvalues and eigenfunctions for each irreducible representation and for a range of values of g. Pairs of eigenvalues coalesce at exceptional points gc; their magnitude roughly decreasing with the magnitude of the eigenvalues. It is difficult to estimate whether there is a phase transition at a nonzero value of g as conjectured in earlier papers. Group theory and perturbation theory enable one to predict whether a given space-time symmetry leads to real eigenvalues for sufficiently small nonzero values of g. Fil: Amore, Paolo. Universidad de Colima; México Fil: Fernández, Francisco Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina Fil: Garcia, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina |
| description |
We analyse some PT-symmetric oscillators with Td symmetry that depend on a potential parameter g. We calculate the eigenvalues and eigenfunctions for each irreducible representation and for a range of values of g. Pairs of eigenvalues coalesce at exceptional points gc; their magnitude roughly decreasing with the magnitude of the eigenvalues. It is difficult to estimate whether there is a phase transition at a nonzero value of g as conjectured in earlier papers. Group theory and perturbation theory enable one to predict whether a given space-time symmetry leads to real eigenvalues for sufficiently small nonzero values of g. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-02 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/37673 Amore, Paolo; Fernández, Francisco Marcelo; Garcia, Javier; Non-Hermitian oscillators with Td symmetry; Academic Press Inc Elsevier Science; Annals of Physics (New York); 353; 2-2015; 231-258 0003-4916 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/37673 |
| identifier_str_mv |
Amore, Paolo; Fernández, Francisco Marcelo; Garcia, Javier; Non-Hermitian oscillators with Td symmetry; Academic Press Inc Elsevier Science; Annals of Physics (New York); 353; 2-2015; 231-258 0003-4916 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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openAccess |
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Academic Press Inc Elsevier Science |
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Academic Press Inc Elsevier Science |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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