Noncommutativity in (2+1)-dimensions and the Lorentz group
In this article we considered models of particles living in a three-dimensional space-time with a nonstandard noncommutativity induced by shifting canonical coordinates and momenta with generators of a unitary irreducible representation of the Lorentz group. The Hilbert space gets the structure of a...
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| Autores principales: | , , , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
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2012
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/96121 https://ri.conicet.gov.ar/11336/74566 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.86.105035 |
| Aporte de: |
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I19-R120-10915-96121 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Ciencias Exactas Noncommutative space Lorentz group Quantum mechanics model Landau problem |
| spellingShingle |
Física Ciencias Exactas Noncommutative space Lorentz group Quantum mechanics model Landau problem Falomir, Horacio Alberto Vega, Federico Gaspar Gamboa, Jorge Mendez, Fernando Loewe, Marcelo Noncommutativity in (2+1)-dimensions and the Lorentz group |
| topic_facet |
Física Ciencias Exactas Noncommutative space Lorentz group Quantum mechanics model Landau problem |
| description |
In this article we considered models of particles living in a three-dimensional space-time with a nonstandard noncommutativity induced by shifting canonical coordinates and momenta with generators of a unitary irreducible representation of the Lorentz group. The Hilbert space gets the structure of a direct product with the representation space, where we are able to construct operators which realize the algebra of Lorentz transformations. We study the modified Landau problem for both Schrödinger and Dirac particles, whose Hamiltonians are obtained through a kind of non-Abelian Bopp's shift of the dynamical variables from the ones of the usual problem in the normal space. The spectrum of these models are considered in perturbation theory, both for small and large noncommutativity parameters. We find no constraint between the parameters referring to noncommutativity in coordinates and momenta but they rather play similar roles. Since the representation space of the unitary irreducible representations SL(2,R) can be realized in terms of spaces of square-integrable functions, we conclude that these models are equivalent to quantum mechanical models of particles living in a space with an additional compact dimension. |
| format |
Articulo Preprint |
| author |
Falomir, Horacio Alberto Vega, Federico Gaspar Gamboa, Jorge Mendez, Fernando Loewe, Marcelo |
| author_facet |
Falomir, Horacio Alberto Vega, Federico Gaspar Gamboa, Jorge Mendez, Fernando Loewe, Marcelo |
| author_sort |
Falomir, Horacio Alberto |
| title |
Noncommutativity in (2+1)-dimensions and the Lorentz group |
| title_short |
Noncommutativity in (2+1)-dimensions and the Lorentz group |
| title_full |
Noncommutativity in (2+1)-dimensions and the Lorentz group |
| title_fullStr |
Noncommutativity in (2+1)-dimensions and the Lorentz group |
| title_full_unstemmed |
Noncommutativity in (2+1)-dimensions and the Lorentz group |
| title_sort |
noncommutativity in (2+1)-dimensions and the lorentz group |
| publishDate |
2012 |
| url |
http://sedici.unlp.edu.ar/handle/10915/96121 https://ri.conicet.gov.ar/11336/74566 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.86.105035 |
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AT falomirhoracioalberto noncommutativityin21dimensionsandthelorentzgroup AT vegafedericogaspar noncommutativityin21dimensionsandthelorentzgroup AT gamboajorge noncommutativityin21dimensionsandthelorentzgroup AT mendezfernando noncommutativityin21dimensionsandthelorentzgroup AT loewemarcelo noncommutativityin21dimensionsandthelorentzgroup |
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Repositorios |
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