Gerben Oling
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View article: Boundary Energy-Momentum Tensors for Asymptotically Flat Spacetimes
Boundary Energy-Momentum Tensors for Asymptotically Flat Spacetimes Open
We consider 3D and 4D asymptotically flat spacetimes near future null infinity endowed with the most general allowed Carroll geometry. We define a boundary energy-momentum tensor by varying the on-shell action with respect to the Carroll m…
Mixmasters in Wonderland: Chaotic dynamics from Carroll limits of gravity Open
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 ric…
Mixmasters in Wonderland: Chaotic dynamics from Carroll limits of gravity Open
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 ric…
Exact approaches on the string worldsheet Open
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…
Setting the connection free in the Galilei and Carroll expansions of gravity Open
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 Eins…
Setting the connection free in the Galilei and Carroll expansions of gravity Open
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 Eins…
Exact approaches on the string worldsheet Open
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…
View article: Longitudinal Galilean and Carrollian limits of non-relativistic strings
Longitudinal Galilean and Carrollian limits of non-relativistic strings Open
A bstract 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 systema…
View article: Longitudinal Galilean and Carrollian limits of non-relativistic strings
Longitudinal Galilean and Carrollian limits of non-relativistic strings Open
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 ex…
Conformal Carroll scalars with boosts Open
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 asym…
Review on non-relativistic gravity Open
This study reviews the history of Newton–Cartan (NC) 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 …
Review on Non-Relativistic Gravity Open
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 t…
Report on 2207.03468v2 Open
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 asymp…
Report on 2207.03468v2 Open
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 asymp…
Carroll Expansion of General Relativity Open
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…
Conformal Carroll Scalars with Boosts Open
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 asym…
Aspects of Nonrelativistic Strings Open
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 th…
Report on 2112.12684v2 Open
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 r…
Carroll Expansion of General Relativity Open
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…
Galilean first-order formulation for the nonrelativistic expansion of general relativity Open
We reformulate the Palatini action for general relativity (GR) in terms of\nmoving frames that exhibit local Galilean covariance in a large speed of light\nexpansion. For this, we express the action in terms of variables that are\nadapted …
Boundary symmetries and strong coupling dualities Open
In this doctoral thesis we study aspects of dualities that arise from string theory. We make extensive use of the Chern-Simons formulation of three-dimensional gravity and its boundary symmetries, which we review in detail using the Drinfe…