3 papers
quant-ph2023
Motivating semiclassical gravity: a classical-quantum approximation for bipartite quantum systems
Viqar Husain, Irfan Javed, Sanjeev S. Seahra +1
We derive a "classical-quantum" approximation scheme for a broad class of bipartite quantum systems from fully quantum dynamics. In this approximation, one subsystem evolves via cl…
gr-qc2020
Manifold Properties from Causal Sets using Chains
Joachim Kambor, Nomaan X
We study the utility of chains defined on causal sets in estimating continuum properties like the curvature, the proper time and the spacetime dimension through a numerical analysi…
gr-qc2018
Studies on the SJ Vacuum in de Sitter Spacetime
Sumati Surya, Nomaan X, Yasaman K. Yazdi
In this work we study the Sorkin-Johnston (SJ) vacuum in de Sitter spacetime for free scalar field theory. For the massless theory we find that the SJ vacuum can neither be obtaine…