Loop quantum gravity

C Rovelli - Living reviews in relativity, 2008 - Springer
The problem of describing the quantum behavior of gravity, and thus understanding
quantum spacetime, is still open. Loop quantum gravity is a well-developed approach to this …

Quantum geometry of isolated horizons and black hole entropy

A Ashtekar, J Baez, K Krasnov - arXiv preprint gr-qc/0005126, 2000 - arxiv.org
Using the earlier developed classical Hamiltonian framework as the point of departure, we
carry out a non-perturbative quantization of the sector of general relativity, coupled to matter …

Entanglement entropy of electromagnetic edge modes

W Donnelly, AC Wall - Physical review letters, 2015 - APS
The vacuum entanglement entropy of Maxwell theory, when evaluated by standard methods,
contains an unexpected term with no known statistical interpretation. We resolve this two …

Dynamics of entanglement in one-dimensional spin systems

L Amico, A Osterloh, F Plastina, R Fazio, GM Palma - Physical Review A, 2004 - APS
We study the dynamics of quantum correlations in a class of exactly solvable Ising-type
models. We analyze in particular the time evolution of initial Bell states created in a fully …

Extended actions, dynamics of edge modes, and entanglement entropy

M Geiller, P Jai-Akson - Journal of High Energy Physics, 2020 - Springer
A bstract In this work we propose a simple and systematic framework for including edge
modes in gauge theories on manifolds with boundaries. We argue that this is necessary in …

Lower entropy bounds and particle number fluctuations in a Fermi sea

I Klich - Journal of Physics A: Mathematical and General, 2006 - iopscience.iop.org
In this letter we demonstrate, in an elementary manner, that given a partition of the single
particle Hilbert space into orthogonal subspaces, a Fermi sea may be factored into pairs of …

Strings, loops and others: a critical survey of the present approaches to quantum gravity

C Rovelli - arXiv preprint gr-qc/9803024, 1998 - arxiv.org
I review the present theoretical attempts to understand the quantum properties of spacetime.
In particular, I illustrate the main achievements and the main difficulties in: string theory, loop …

On the origin of the quantum group symmetry in 3d quantum gravity

M Dupuis, L Freidel, F Girelli, A Osumanu… - arXiv preprint arXiv …, 2020 - arxiv.org
It is well-known that quantum groups are relevant to describe the quantum regime of 3d
gravity. They encode a deformation of the gauge symmetries parametrized by the value of …

A note on asymptotic symmetries and soft-photon theorem

A Mohd - Journal of High Energy Physics, 2015 - Springer
A bstract We use the asymptotic data at conformal null-infinity to formulate Weinberg's soft-
photon theorem for Abelian gauge theories with massless charged particles. We show that …

Gauge-invariant variables and entanglement entropy

A Agarwal, D Karabali, VP Nair - Physical Review D, 2017 - APS
The entanglement entropy (EE) of gauge theories in three spacetime dimensions is
analyzed using manifestly gauge-invariant variables defined directly in the continuum …