217 citations · 1.3k across the 47 of their papers we have counts for
49 papers
Visions in Quantum Gravity
Luca Buoninfante, Benjamin Knorr, K. Sravan Kumar +36
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is cr…
Null Geodesics from Ladder Molecules
Anish Bhattacharya, Abhishek Mathur, Sumati Surya
We propose a discrete analogue of null geodesics in causal sets that are approximated by a region of 2d Minkowski spacetime, in the spirit of Kronheimer and Penrose's "grids" and "…
Frontiers of Quantum Gravity: shared challenges, converging directions
Jan de Boer, Bianca Dittrich, Astrid Eichhorn +10
Understanding the quantum nature of spacetime and gravity remains one of the most ambitious goals of theoretical physics. It promises to provide key new insights into fundamental p…
Spacetime Entanglement Entropy: Covariance and Discreteness
Abhishek Mathur, Sumati Surya, Nomaan X
We review some recent results on Sorkin's spacetime formulation of the entanglement entropy (SSEE) for a free quantum scalar field both in the continuum and in manifold-like causal…
Spacetime Entanglement Entropy of de Sitter and Black Hole Horizons
Abhishek Mathur, Sumati Surya, Nomaan X
We calculate Sorkin's manifestly covariant entanglement entropy for a massive and massless minimally coupled free Gaussian scalar field for the de Sitter horizon and…
A Spacetime Calculation of the Calabrese-Cardy Entanglement Entropy
Abhishek Mathur, Sumati Surya, Nomaan X
We calculate Sorkin's spacetime entanglement entropy of a Gaussian scalar field for complementary regions in the 2d cylinder spacetime and show that it has the Calabrese-Cardy form…