125 citations · 174 across the 12 of their papers we have counts for
12 papers
Semiclassical Analysis of Constrained Quantum Systems
Artur Tsobanjan
Exact procedures that follow Dirac's constraint quantization of gauge theories are usually technically involved and often difficult to implement in practice. We overview an "effect…
In, Through and Beyond the Planck Scale
Leonardo Modesto, Isabeau Prémont-Schwarz
In this paper we have recalled the semiclassical metric obtained from a classical analysis of the loop quantum black hole (LQBH). We show that the regular Reissner-Nordström-like m…
Beyond the Planck scale
Steven B. Giddings
I outline motivations for believing that important quantum gravity effects lie beyond the Planck scale at both higher energies and longer distances and times. These motivations ari…
2-Group Representations for Spin Foams
Aristide Baratin, Derek K. Wise
Just as 3d state sum models, including 3d quantum gravity, can be built using categories of group representations, "2-categories of 2-group representations" may provide interesting…
Deformed Maxwell Algebras and their Realizations
Joaquim Gomis, Kiyoshi Kamimura, Jerzy Lukierski
We study all possible deformations of the Maxwell algebra. In D=d+1\neq 3 dimensions there is only one-parameter deformation. The deformed algebra is isomorphic to so(d+1,1)\oplus…
Cosmological consequences of the NonCommutative Geometry Spectral Action
Mairi Sakellariadou
Cosmological consequences of the noncommutative geometry spectral action are presented. Neglecting the nonminimal coupling of the Higgs field to the curvature, background cosmology…
Fun from none: deformed symmetries and Fock space
Michele Arzano
We give a pedagogical introduction to the basics of deformations of relativistic symmetries and the Hilbert spaces of free quantum fields built as their representations. We focus i…
Spontaneous Dimensional Reduction in Short-Distance Quantum Gravity?
Steven Carlip
Several lines of evidence suggest that quantum gravity at very short distances may behave effectively as a two-dimensional theory. I summarize these hints, and offer an additional…
Energy scale of the Big Bounce
Wlodzimierz Piechocki
We examine the nature of the cosmological big-bounce (BB) transition within the loop geometry underlying Loop Quantum Cosmology (LQC) at classical and quantum levels. Our canonical…
Probing Lorentz Violating (Stringy) Quantum Space-Time Foam
Nick E. Mavromatos
Quantum Space Time may be characterized by a plethora of novel phenomena, such as Lorentz violations and non-trivial refractive indices, stochastic metric fluctuation effects leadi…
Twisted Covariance and Weyl Quantisation
Gherardo Piacitelli
In this letter we wish to clarify in which sense the tensor nature of the commutation relations [x^mu,x^nu]=i theta ^{mu nu} underlying Minkowski spacetime quantisation cannot be s…
Husain-Kuchar model as a constrained BF theory
Merced Montesinos, Mercedes Velazquez
The Husain-Kuchar theory is a four-dimensional background-independent model that has long been viewed as a useful model for addressing several conceptual and technical problems app…