62 citations · 370 across the 20 of their papers we have counts for
20 papers
From Galilei to Euclidean Carroll and the Alice Particle: The Times They Are a-Changin'
Eric A. Bergshoeff, Luca Romano, Jan Rosseel +2
In generalized, also known as -brane Galilei limits, the speed of light becomes infinite in the directions transverse to a -dimensional Lorentzian worldvolume. In thi…
Heterotic String Sigma Models: Discrete Light Cone Quantization and Its Current-Current Deformation
Eric A. Bergshoeff, Kevin T. Grosvenor, Luca Romano +1
We propose a two-dimensional superstring sigma model that defines a self-contained corner of heterotic string theory, whose second quantization is heterotic matrix string theory. T…
From Relativistic Gravity to the Poisson Equation
Eric A. Bergshoeff, Giacomo Giorgi, Luca Romano
We consider the non-relativistic limit of general relativity coupled to a -form gauge field and a scalar field in arbitrary dimensions and investigate under which conditions…
Non-Relativistic Heterotic String Theory
Eric Bergshoeff, Luca Romano
In this work we consider heterotic-gravity as the low-energy approximation to heterotic string theory. We define a consistent non-relativistic limit of heterotic gravity that inclu…
Generalized Newton-Cartan Geometries for Particles and Strings
Eric Bergshoeff, Kevin van Helden, Johannes Lahnsteiner +2
We discuss the generalized Newton-Cartan geometries that can serve as gravitational background fields for particles and strings. In order to enable us to define affine connections…
The Supersymmetric Neveu-Schwarz Branes of Non-Relativistic String Theory
Eric Bergshoeff, Johannes Lahnsteiner, Luca Romano +1
We construct the basic Neveu-Schwarz (NS) brane solutions of non-relativistic string theory using longitudinal T-duality as a solution generating technique. Extending the NS backgr…
Non-Relativistic Ten-Dimensional Minimal Supergravity
E. A. Bergshoeff, J. Lahnsteiner, L. Romano +2
We construct a non-relativistic limit of ten-dimensional N=1 supergravity from the point of view of the symmetries, the action, and the equations of motion. This limit can only be…
A Non-Relativistic Limit of NS-NS Gravity
Eric Bergshoeff, Johannes Lahnsteiner, Luca Romano +2
We discuss a particular non-relativistic limit of NS-NS gravity that can be taken at the level of the action and equations of motion, without imposing any geometric constraints by…
Lie Algebra Expansion and Integrability in Superstring Sigma-Models
Andrea Fontanella, Luca Romano
Lie algebra expansion is a technique to generate new Lie algebras from a given one. In this paper, we apply the method of Lie algebra expansion to superstring -models with a $\m…
Non-Relativistic Supersymmetry on Curved Three-Manifolds
Eric Bergshoeff, Athanasios Chatzistavrakidis, Johannes Lahnsteiner +2
We construct explicit examples of non-relativistic supersymmetric field theories on curved Newton-Cartan three-manifolds. These results are obtained by performing a null reduction…
Carroll versus Galilei from a Brane Perspective
Eric Bergshoeff, José Manuel Izquierdo, Luca Romano
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, ...).…
Non-Relativistic Four Dimensional p-Brane Supersymmetric Theories and Lie Algebra Expansion
Luca Romano
We apply the Lie algebra expansion method to the super-Poincaré algerba in four dimensions. We define a set of p-brane projectors that induce a decomposition of the…
Orbits in Non-Supersymmetric Magic Theories
Alessio Marrani, Luca Romano
We determine and classify the electric-magnetic duality orbits of fluxes supporting asymptotically flat, extremal black branes in space-time dimensions in the so-called n…
Lie Algebra Expansions and Actions for Non-Relativistic Gravity
Eric Bergshoeff, Jose Manuel Izquierdo, Tomas Ortin +1
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…
Newton-Cartan Gravity and Torsion
Eric Bergshoeff, Athanasios Chatzistavrakidis, Luca Romano +1
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 pro…
Branes and Polytopes
Luca Romano
We investigate the hierarchies of half-supersymmetric branes in maximal supergravity theories. By studying the action of the Weyl group of the U-duality group of maximal supergravi…
Non-Supersymmetric Magic Theories and Ehlers Truncations
Alessio Marrani, Gianfranco Pradisi, Fabio Riccioni +1
We consider the non-supersymmetric "magic" theories based on the split quaternion and the split complex division algebras. We show that these theories arise as "Ehlers" $SL(2,\math…
Real weights, bound states and duality orbits
Alessio Marrani, Fabio Riccioni, Luca Romano
We show that the duality orbits of extremal black holes in supergravity theories with symmetric scalar manifolds can be derived by studying the stabilizing subalgebras of suitable…
Towards a classification of branes in theories with eight supercharges
Eric A. Bergshoeff, Fabio Riccioni, Luca Romano
We provide a classification of half-supersymmetric branes in quarter-maximal supergravity theories with scalars parametrising coset manifolds. Guided by the results previously obta…
Branes, Weights and Central Charges
Eric A. Bergshoeff, Fabio Riccioni, Luca Romano
We study the properties of half-supersymmetric branes in string theory with 32 supercharges from a purely group-theoretical point of view using the U-duality symmetry of maximal su…