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253 papers · 1 filter
A universal sum over topologies in 3d gravity
Alexandre Belin, Scott Collier, Lorenz Eberhardt +2
We explore the sum over topologies in AdS quantum gravity and its relationship with the statistical interpretation of the boundary theory. We formulate a statistical version of…
Does decoherence violate decoupling?
C. P. Burgess, Thomas Colas, R. Holman +1
Recent calculations in both flat and de Sitter spacetimes have highlighted a tension between the decoupling of high-energy physics from low-energy degrees of freedom and the expect…
Does the Vacuum Gravitate on Microscopic Scales? Rydberg Atoms Indicate Probably Not
Suman Kumar Kundu, Arnab Pradhan, Carl Rosenzweig
The cosmological constant presents one of the most fascinating and confounding problems in physics. A straightforward, seemingly robust prediction of quantum mechanics and general…
Review of Twisted Poincare Symmetry
A. P. Balachandran, S. Kurkcuoglu, S. Vaidya
This article reviews the construction and some applications of twisted Poincare-covariant quantum fields on the Moyal plane. The Drinfeld twist, which plays a key mathematical role…
Induced topological gravity and anomaly inflow from Kaehler-Dirac fermions in odd dimensions
Simon Catterall, Arnab Pradhan
We show that the effective action that results from integrating out massive Kaehler-Dirac fermions propagating on a curved three dimensional space is a topological gravity theory o…
Superselection, Boundary Algebras and Duality in Gauge Theories
A. P. Balachandran, V. P. Nair, A. Pinzul +2
We consider the generators of gauge transformations with test functions which do not vanish on the boundary of a spacelike region of interest. These are known to generate the edge…