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20022009
most citedGauge Symmetry and Supersymmetry of Multiple M2-Branes

1.1k citations

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gr-qc2009★ 14 cited

Unstable Anisotropic Loop Quantum Cosmology

William Nelson, Mairi Sakellariadou

We study stability conditions of the full Hamiltonian constraint equation describing the quantum dynamics of the diagonal Bianchi I model in the context of LQC. Our analysis has sh…

gr-qc2008★ 6 cited

Branon stabilization from fermion-induced radiative corrections

Jean Alexandre, Darrel Yawitch

We consider a 3-brane embedded in 5-dimensional space time characterized by a Gaussian warp factor, for which the four-dimensional effective theory for brane fluctuation (branons)…

gr-qc2008★ 6 cited

Lattice refinement in loop quantum cosmology

Mairi Sakellariadou

Lattice refinement in LQC, its meaning and its necessity are discussed. The rôle of lattice refinement for the realisation of a successful inflationary model is explicitly shown. A…

gr-qc2008★ 22 cited

Unique factor ordering in the continuum limit of LQC

William Nelson, Mairi Sakellariadou

We show that the factor ordering ambiguities associated with the loop quantisation of the gravitational part of the cosmological Hamiltonian constraint, disappear at the level of W…

gr-qc2008★ 23 cited

Numerical techniques for solving the quantum constraint equation of generic lattice-refined models in loop quantum cosmology

William Nelson, Mairi Sakellariadou

To avoid instabilities in the continuum semi-classical limit of loop quantum cosmology models, refinement of the underlying lattice is necessary. The lattice refinement leads to ne…

gr-qc2007★ 58 cited

Gravitational solitons and vacuum metrics in five-dimensional Lovelock gravity

C. Garraffo, G. Giribet, E. Gravanis +1

Junction conditions for vacuum solutions in five-dimensional Einstein-Gauss-Bonnet gravity are studied. We focus on those cases where two spherically symmetric regions of space-tim…