We review some aspects of the implementation of spacetime symmetries in noncommutative
field theories, emphasizing their origin in string theory and how they may be used to …

In this introductory review, we argue that a quantum structure of space-time naturally entails
a higher-spin theory, to avoid significant Lorentz violation. A suitable framework is provided …

A bstract Matrix theory is a proposed non-perturbative definition of superstring theory in
which space is emergent. We begin a study of cosmology in the context of matrix theory …

We show that the matrix-model action for noncommutative U (n) gauge theory actually
describes SU (n) gauge theory coupled to gravity. This is elaborated in the 4-dimensional …

Building on mathematical structures familiar from quantum mechanics, this book provides an
introduction to quantization in a broad context before develo** a framework for quantum …

We showed before that self-dual electromagnetism in noncommutative (NC) space–time is
equivalent to self-dual Einstein gravity. This result implies a striking picture about gravity …

Covariant 4-dimensional fuzzy spheres, matrix models and higher spin - IOPscience Skip to
content IOP Science home Accessibility Help Search Journals Journals list Browse more than …

A bstract We discuss the path-integral quantisation of perturbative string theory and show
equivalence between the Polyakov-type, Schild-type and Nambu-Goto-type formulations of …

A bstract We discuss a (3+ 1)-dimensional covariant quantum space-time describing a
FLRW cosmology with Big Bounce, obtained by a projection of the fuzzy hyperboloid H 4 n …

A bstract We study perturbations of 4-dimensional fuzzy spheres as backgrounds in the IKKT
or IIB matrix model. Gauge fields and metric fluctuations are identified among the excitation …