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6 papers · 2 filters
Quantum Gravity: Mixed States from Diffeomorphism Anomalies
A. P. Balachandran, Amilcar R. de Queiroz
In a previous paper, we discussed simple examples like particle on a circle and molecules to argue that mixed states can arise from anomalous symmetries. This idea was applied to t…
Quantum Equivalence Principle Violations in Scalar-Tensor Theories
Cristian Armendariz-Picon, Riccardo Penco
We study the equivalence principle and its violations by quantum effects in scalar-tensor theories that admit a conformal frame in which matter only couples to the spacetime metric…
Mixed States from Anomalies
A. P. Balachandran, Amilcar R. de Queiroz
There are several instances where quantum anomalies of continuous and discrete classical symmetries play an important role in fundamental physics. Examples come from chiral anomali…
Numerical Polynomial Homotopy Continuation Method and String Vacua
Dhagash Mehta
Finding vacua for the four dimensional effective theories for supergravity which descend from flux compactifications and analyzing them according to their stability is one of the c…
Lehmann-Symanzik-Zimmermann S-Matrix elements on the Moyal Plane
A. P. Balachandran, Pramod Padmanabhan, Amilcar R. de Queiroz
Field theories on the Groenewold-Moyal(GM) plane are studied using the Lehmann-Symanzik-Zimmermann(LSZ) formalism. The example of real scalar fields is treated in detail. The S-mat…
Perturbative renormalization of lattice N=4 super Yang-Mills theory
Simon Catterall, Eric Dzienkowski, Joel Giedt +2
We consider N=4 super Yang-Mills theory on a four-dimensional lattice. The lattice formulation under consideration retains one exact supersymmetry at non-zero lattice spacing. We s…