673 citations · 10.9k across the 206 of their papers we have counts for
208 papers
Carrollian Worldsheets on Carrollian Targets, When does ILST describe a null string theory?
M. M. Sheikh-Jabbari, H. Yavartanoo
Null string theory (NST) is a two-dimensional (2d) sigma-model on a Carrollian worldsheet with 2d diffeomorphisms, Weyl and Carroll-Weyl (CW) scalings as gauge symmetries whereas t…
Null String Holography, Null Strings Probe Projective Boundary of Their Target Spaces
M. M. Sheikh-Jabbari, H. Yavartanoo
We prove that the \textit{minimal null string theory} on a background manifold is classically equivalent to the ILST theory on the projective boundary of $\mathcal M…
What is Classical Null String Theory?
M. M. Sheikh-Jabbari, H. Yavartanoo
We revisit the classical definition of a null string in a D-dimensional Minkowski target space and distinguish a consistent partially-gauged Carrollian sigma-model from the null st…
Who Writes the Gravitational Second Law of Thermodynamics?
V. R. Shajiee, M. M. Sheikh-Jabbari, V. Taghiloo
We define gravitational entropy as the manifestly integrable surface charge associated with local transverse Lorentz boosts, entirely bypassing the conventional reliance on spaceti…
Dynamical Entropy Is a Noether Charge
V. R. Shajiee, M. M. Sheikh-Jabbari, V. Taghiloo
Black hole thermodynamics for generic dynamical, non-equilibrium regimes remains a fundamental challenge. We establish dynamical entropy as the Noether charge associated with a gen…
Null-strings Gauged, Reloaded and Quantized, I: Canonical Quantization in the Light-Cone Gauge
Ida M. Rasulian, M. M. Sheikh-Jabbari, H. Yavartanoo
We study the light-cone quantization of null-strings in dimensional flat target-space. Incorporating the essential new gauge symmetry and the associated constraint structure of…