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Revista Colombiana de Matemáticas

versão impressa ISSN 0034-7426

Rev.colomb.mat. vol.53  supl.1 Bogotá dez. 2019  Epub 24-Mar-2020

https://doi.org/10.15446/recolma.v53nsupl.84099 

Artículos originales

Connes-Landi spheres are homogeneous spaces

Mitsuru Wilson1  * 

1 Instytut Matematyczny, Polonia


Abstract:

In this paper, we review some recent developments of compact quantum groups that arise as θ-deformations of compact Lie groups of rank at least two. A θ-deformation is merely a 2-cocycle deformation using an action of a torus of dimension higher than 2. Using the formula (Lemma 5.3) developed in [11], we derive the noncommutative 7-sphere in the sense of Connes and Landi [3] as the fixed-point subalgebra.

Keywords: Noncommutative geometry; quantum homogeneous space; compact quantum group; Connes-Landi deformation; θ-deformation

Resumen:

En este artículo nosotros revisamos algunos desarrollos recientes de grupos cuánticos compactos que surgen en θ-deformaciones de grupos compactos de Lie de rango al menos dos. Una θ-deformación es simplemente una deformación por 2-cociclo, usando una acción de un toro de dimensión superior a 2. Usando la fórmula (Lemma 5.3) desarrollada en [11], nosotros derivamos la 7-esfera no conmutativa, en el sentido de Connes y Landi [3], como la subálgebra de puntos fijos.

Palabras clave: Geometría no conmutativa; espacio cuántico homogéneo; grupo cuántico compacto; deformación de Connes-Landi; θ-deformación

Text complete and PDF

Acknowledgment

I would like to gratefully thank the organizers for organizing XXII Coloquio Latinoamericano de Álgebra, 2017 at Pontificial Universidad católica del Ecuador where I was able to advance my work. I would like to thank Sylvie Paycha for some fruitful discussions at this conference

References

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[10] Shuzhou Wang, Deformations of compact quantum groups via rieffel's quantization, Communications in Mathematical Physics 178 (1996), no. 1, 747-764. [ Links ]

[11] Mitsuru Wilson, Quantum symmetries of the deformation quantization of compact lie groups, Submitted to Letters in Mathematical Physics (2019). [ Links ]

[12] Stanislaw. Woronowicz, Compact matrix pseudogroups, Communication in Mathematical Physics 111 (1987), no. 1, 613-665. [ Links ]

Received: August 11, 2018; Accepted: November 02, 2018

*Correspondencia: Mitsuru Wilson, Laboratory of Noncommutative Geometry, Instytut Matematyczny, Polskiej Akademii Nauk, Jana i Jędrzeja Sniadeckich 8, 00-656 Warszawa, Polonia. Correo electrónico: mwilson@impan.pl. DOI: https://doi.org/10.15446/recolma.v53nsupl.84097

2010 Mathematics Subject Classification. 14M17, 57T05, 16T05, 11M55.

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