Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Oling, Gerben"'
Autor:
Oling, Gerben, Pedraza, Juan F.
We demonstrate that the Carroll limit of general relativity coupled to matter captures the chaotic mixmaster dynamics of near-singularity limits. Zooming in on the behavior of general relativity close to spacelike singularities reveals rich and solva
Externí odkaz:
http://arxiv.org/abs/2409.05836
We obtain a Palatini-type formulation for the Galilei and Carroll expansions of general relativity, where the connection is promoted to a variable. Known versions of these large and small speed of light expansions are derived from the Einstein-Hilber
Externí odkaz:
http://arxiv.org/abs/2312.13924
Autor:
Demulder, Saskia, Driezen, Sibylle, Knighton, Bob, Oling, Gerben, Retore, Ana L., Seibold, Fiona K., Sfondrini, Alessandro, Yan, Ziqi
We review different exact approaches to string theory. In the context of the Green-Schwarz superstring, we discuss the action in curved backgrounds and its supercoset formulation, with particular attention to superstring backgrounds of the $AdS_3$ ty
Externí odkaz:
http://arxiv.org/abs/2312.12930
It is well known that one can take an infinite speed of light limit that gives rise to non-relativistic strings with a relativistic worldsheet sigma model but with a non-relativistic target space geometry. In this work we systematically explore two f
Externí odkaz:
http://arxiv.org/abs/2309.14467
We review the history of Newton-Cartan gravity with an emphasis on recent developments, including the covariant, off-shell large speed of light expansion of general relativity. Depending on the matter content, this expansion either leads to Newton-Ca
Externí odkaz:
http://arxiv.org/abs/2212.11309
Publikováno v:
SciPost Phys. 14, 086 (2023)
We construct two distinct actions for scalar fields that are invariant under local Carroll boosts and Weyl transformations. Conformal Carroll field theories were recently argued to be related to the celestial holography description of asymptotically
Externí odkaz:
http://arxiv.org/abs/2207.03468
Autor:
Oling, Gerben, Yan, Ziqi
We review recent developments on nonrelativistic string theory. In flat spacetime, the theory is defined by a two-dimensional relativistic quantum field theory with nonrelativistic global symmetries acting on the worldsheet fields. This theory arises
Externí odkaz:
http://arxiv.org/abs/2202.12698
Publikováno v:
SciPost Phys. 13, 055 (2022)
We study the small speed of light expansion of general relativity, utilizing the modern perspective on non-Lorentzian geometry. This is an expansion around the ultra-local Carroll limit, in which light cones close up. To this end, we first rewrite th
Externí odkaz:
http://arxiv.org/abs/2112.12684
We revisit the formulation of non-relativistic (NR) string theory and its target space geometry. We obtain a new formulation in which the geometry contains a two-form field that couples to the tension current and that transforms under string Galilei
Externí odkaz:
http://arxiv.org/abs/2107.00642
Publikováno v:
JHEP 04 (2021) 072
We explore the notion of isometries in non-Riemannian geometries. Such geometries include and generalise the backgrounds of non-relativistic string theory, and they can be naturally described using the formalism of double field theory. Adopting this
Externí odkaz:
http://arxiv.org/abs/2012.07766