278 citations · 1.6k across the 27 of their papers we have counts for
28 papers
On the paraxial approximation in quantum optics II: Henochromatic modes of a Maxwell field
M. Fernanda Jongewaard de Boer, Christopher Beetle
A companion paper has argued that the best way to associate single-particle quantum states of a scalar field to the modes of a narrowly collimated beam of classical radiation model…
The paraxial approximation in quantum optics I: Henochromatic modes of a scalar field
Christopher Beetle, M. Fernanda Jongewaard de Boer
This paper examines how best to associate quantum states of a single particle to different modes of a narrowly collimated beam of classical radiation modeled in the paraxial approx…
Quantum isotropy and the reduction of dynamics in Bianchi I
Christopher Beetle, Jonathan Steven Engle, Matthew Ernest Hogan +1
The authors previously introduced a diffeomorphism-invariant definition of a homogeneous and isotropic sector of loop quantum gravity, along with a program to embed loop quantum co…
Connecting empirical phenomena and theoretical models of biological coordination across scales
Mengsen Zhang, Christopher Beetle, J. A. Scott Kelso +1
Coordination is ubiquitous in living systems. Existing theoretical models of coordination -- from bacteria to brains -- focus on either gross statistics in large-scale systems ($N\…
Diffeomorphism invariant cosmological sector in loop quantum gravity
Christopher Beetle, Jonathan Steven Engle, Matthew Ernest Hogan +1
In this paper we work out in detail a new proposal to define rigorously a sector of loop quantum gravity at the diffeomorphism invariant level corresponding to homogeneous and isot…
Diffeomorphism invariant cosmological symmetry in full quantum gravity
Christopher Beetle, Jonathan S. Engle, Matthew E. Hogan +1
This paper summarizes a new proposal to define rigorously a sector of loop quantum gravity at the diffeomorphism invariant level corresponding to homogeneous and isotropic cosmolog…