742 citations · 7.2k across the 113 of their papers we have counts for
114 papers
Quantum carrollian bosonic strings
José Figueroa-O'Farrill, Emil Have, Niels A. Obers
We study a recently discovered carrollian bosonic string, described classically by a sigma model where both the worldsheet and the target spacetime are carrollian. After fixing the…
Carroll Geometry Meets De Sitter Space via Holography
Chris D. A. Blair, Niels A. Obers, Ziqi Yan
We explain how to relate the ideas of Carroll geometry, matrix theory on instantonic objects, and infinite boost limits of M-theory. Based on these new insights, we explore the imp…
Dual Non-Lorentzian Backgrounds for Matrix Theories
Chris D. A. Blair, Johannes Lahnsteiner, Niels A. Obers +1
We study properties of non-Lorentzian geometries arising from BPS decoupling limits of string theory that are central to matrix theory and the AdS/CFT correspondence. We focus on d…
Gravitational solitons and non-relativistic string theory
Troels Harmark, Johannes Lahnsteiner, Niels A. Obers
We explore the non-relativistic string theory (NRST) limit of type II string theory and its action on gravitational solitons. As a start, we exhibit in detail that the NRST limit i…
Hydrodynamics without Boost-Invariance from Kinetic Theory: From Perfect Fluids to Active Flocks
Kevin T. Grosvenor, Niels A. Obers, Subodh P. Patil
We derive the hydrodynamic equations of perfect fluids without boost invariance [1] from kinetic theory. Our approach is to follow the standard derivation of the Vlasov hierarchy b…
Matrix Theory Reloaded: A BPS Road to Holography
Chris D. A. Blair, Johannes Lahnsteiner, Niels A. Obers +1
We revisit the decoupling limits that lead to matrix theories on D-branes. We highlight the BPS nature of these limits, in which the target space geometry becomes non-Lorentzian an…