Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Harold Steinacker"'
Autor:
Harold Steinacker, Jochen Zahn
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 9, p 067 (2013)
We introduce an index indicating the occurrence of chiral fermions at the intersection of branes in matrix models. This allows to discuss the stability of chiral fermions under perturbations of the branes.
Externí odkaz:
https://doaj.org/article/dca4328c4b69407cb25c6a04f6d603dd
Autor:
Paul Schreivogl, Harold Steinacker
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 9, p 060 (2013)
We consider a generalization of the basic fuzzy torus to a fuzzy torus with non-trivial modular parameter, based on a finite matrix algebra. We discuss the modular properties of this fuzzy torus, and compute the matrix Laplacian for a scalar field. I
Externí odkaz:
https://doaj.org/article/c92c5466f5a34a4e844df26b54c6756b
Autor:
Juraj Tekel, Harold Steinacker
Publikováno v:
Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021).
The abstract is available here: https://uscholar.univie.ac.at/o:1675668
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1f18b8fce75b667c4c9dd80da17460f
https://doi.org/10.22323/1.406.0244
https://doi.org/10.22323/1.406.0244
Autor:
Harold Steinacker
Publikováno v:
Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4626ea974430c0809e2345f3ac868e02
https://doi.org/10.22323/1.406.0362
https://doi.org/10.22323/1.406.0362
Autor:
Harold Steinacker
Publikováno v:
Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021).
The abstract is available here: https://uscholar.univie.ac.at/o:1675369
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::305f1d1e00573393fdc09d56461744c5
https://doi.org/10.22323/1.406.0232
https://doi.org/10.22323/1.406.0232
Autor:
Harold Steinacker
Publikováno v:
Advances in Theoretical and Mathematical Physics. 25:1025-1093
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::346a4a50996852708945e00917fc9fef
https://doi.org/10.4310/atmp.2021.v25.n4.a4
https://doi.org/10.4310/atmp.2021.v25.n4.a4
Autor:
Harold Steinacker, Yuhma Asano
Publikováno v:
Nuclear Physics
We present a systematic study of spherically symmetric vacuum solutions of the IKKT matrix model, within the framework of semi-classical covariant quantum geometries. All asymptotically flat solutions of the equations of motion of the frame are found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc4800fb63505954ca1469d405ae5869
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Autor:
Harold Steinacker, Juraj Tekel
Publikováno v:
Journal of High Energy Physics
We present a systematic organization of functions and operators on the fuzzy 2-sphere in terms of string modes, which are optimally localized in position and momentum space. This allows to separate the semi-classical and the deep quantum regime of no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbfa2ebc3bb73c0c4d69b64fe0ed058b
http://arxiv.org/abs/2203.02376
http://arxiv.org/abs/2203.02376
Autor:
Harold Steinacker
Publikováno v:
Physics Letters
Physics Letters B, Vol 827, Iss, Pp 136946-(2022)
Physics Letters B, Vol 827, Iss, Pp 136946-(2022)
The 3+1-dimensional Einstein-Hilbert action is obtained from the 1-loop effective action on noncommutative branes in the IIB or IKKT matrix model. The presence of compact fuzzy extra dimensions ${\cal K}$ as well as maximal supersymmetry of the model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd04f8ac746d9a19d8511f6f1e2e5824
http://arxiv.org/abs/2110.03936
http://arxiv.org/abs/2110.03936
Autor:
Harold Steinacker, Stefan Fredenhagen
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-40 (2021)
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-40 (2021)
We elaborate the description of the semi-classical gravity sector of Yang-Mills matrix models on a covariant quantum FLRW background. The basic geometric structure is a frame, which arises from the Poisson structure on an underlying $S^2$ bundle over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f6d6a551bda49615a9d9960a983b504
http://arxiv.org/abs/2101.07297
http://arxiv.org/abs/2101.07297