717 citations · 4.8k across the 112 of their papers we have counts for
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A path integral formula of quantum gravity emergent from entangled local structures
Jinglong Liu, Stephon Alexander, Antonino Marciano +1
We couple to group field theory (GFT) a scalar field that encodes the entanglement between manifold sites. The scalar field provides a relational clock that enables the derivation…
de Sitter State in Heterotic String Theory
Stephon Alexander, Keshav Dasgupta, Archana Maji +2
Recent no-go theorems have ruled out four-dimensional classical de Sitter vacua in heterotic string theory. On the other hand, the absence of a well-defined Wilsonian effective act…
An Inner Product for 4D Quantum Gravity and the Chern-Simons-Kodama State
Stephon Alexander, Laurent Freidel, Gabriel Herczeg
We demonstrate that reality conditions for the Ashtekar connection imply a non-trivial measure for the inner product of gravitational states in the polarization where the Ashtekar…
The Ashtekar Variables and a Varying Cosmological Constant from Dynamical Chern-Simons Gravity
Stephon Alexander, Tatsuya Daniel, Joao Magueijo
We revisit the Kodama state by quantizing the theory of General Relativity (GR) with dynamical Chern-Simons (dCS) gravity. We find a new exact solution to the Wheeler-DeWitt equati…
The Autodidactic Universe
Stephon Alexander, William J. Cunningham, Jaron Lanier +4
We present an approach to cosmology in which the Universe learns its own physical laws. It does so by exploring a landscape of possible laws, which we express as a certain class of…
The Chern-Simons Caps for Rotating Black Holes
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
We study the dynamical Chern-Simons gravity as an effective quantum field theory, and discuss a broad range of its parameter space where the theory is valid. Within that validity r…