Zobrazeno 1 - 10
of 382
pro vyhledávání: '"Eric Bergshoeff"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-36 (2024)
Abstract We consider spacetime metrics with a given (but quite generic) dependence on a dimensionful parameter such that in the 0 and ∞ limits of that parameter the metric becomes singular. We study the isometry groups of the original spacetime met
Externí odkaz:
https://doaj.org/article/da6afdc8679d4268a5e2b18c8637a171
Publikováno v:
SciPost Physics Lecture Notes, p 69 (2023)
We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras. Next, we construct actions describing the particle dynamics
Externí odkaz:
https://doaj.org/article/33591e66938d49ce9c7491c41944f1e6
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-25 (2020)
Abstract We show that our previous work on Galilei and Carroll gravity, apt for particles, can be generalized to Galilei and Carroll gravity theories adapted to p-branes (p = 0, 1, 2, ⋯). Within this wider brane perspective, we make use of a formal
Externí odkaz:
https://doaj.org/article/3b358973ddfc4fe197dcbe11ef64c506
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-34 (2019)
Abstract We show how the Wess-Zumino terms of the different branes in string theory can be embedded within double field theory. Crucial ingredients in our construction are the identification of the correct brane charge tensors and the use of the doub
Externí odkaz:
https://doaj.org/article/764d3a253bdf474d9b712d31f5ee473d
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-37 (2019)
Abstract We show that the general method of Lie algebra expansions can be applied to re-construct several algebras and related actions for non-relativistic gravity that have occurred in the recent literature. We explain the method and illustrate its
Externí odkaz:
https://doaj.org/article/74b42b465af04b27848683cc7d65f28e
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-23 (2018)
Abstract Nonrelativistic string theory in flat spacetime is described by a two-dimensional quantum field theory with a nonrelativistic global symmetry acting on the worldsheet fields. Nonrelativistic string theory is unitary, ultraviolet complete and
Externí odkaz:
https://doaj.org/article/5ad26e9824984e33a8efaba02f59218d
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-20 (2017)
Abstract We compare the gauging of the Bargmann algebra, for the case of arbitrary torsion, with the result that one obtains from a null-reduction of General Relativity. Whereas the two procedures lead to the same result for Newton-Cartan geometry wi
Externí odkaz:
https://doaj.org/article/c34a3ccd82ca468c904d70e61cddd122
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 3, Pp 1-26 (2017)
Abstract We consider two distinct limits of General Relativity that in contrast to the standard non-relativistic limit can be taken at the level of the Einstein-Hilbert action instead of the equations of motion. One is a non-relativistic limit and le
Externí odkaz:
https://doaj.org/article/78d97c86eeff4e9d9c2297229e26969c
We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras. Next, we construct actions describing the particle dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f05876cbc0246e5c00e43633a3809fc3
http://arxiv.org/abs/2206.12177
http://arxiv.org/abs/2206.12177
Publikováno v:
SciPost Physics Proceedings.
We show how Newton-Cartan geometry can be generalized to String Newton-Cartan geometry which is the geometry underlying non-relativistic string theory. Several salient properties of non-relativistic string theory in this geometric background are pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d6ba448d538f675df50929866029431
https://doi.org/10.21468/scipostphysproc.4.001
https://doi.org/10.21468/scipostphysproc.4.001