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M theory as a matrix model: A Conjecture
We suggest and motivate a precise equivalence between uncompactified 11-dimensional M theory and the N={infinity} limit of the supersymmetric matrix quantum mechanics describing D0 branes. TheExpand
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On the phase structure of vector-like gauge theories with massless fermions
Abstract We present a systematic expansion for studying an infrared-stable fixed point of gauge theories with massless fermions. These results are combined with information from strong coupling andExpand
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Symmetries and Strings in Field Theory and Gravity
We discuss aspects of global and gauged symmetries in quantum field theory and quantum gravity, focusing on discrete gauge symmetries. An effective Lagrangian description of Zp gauge theories showsExpand
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Chiral symmetry breaking in confining theories
The behaviour of the chiral order parameter in gauge theories is analysed. It is shown that in the confining phase chiral symmetry is spontaneously broken. We employ a new lattice version of theExpand
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Probing F-theory with branes
Abstract Last week, A. Sen found an explicit type I string compactification dual to the eight-dimensional F -theory construction with SO (8) 4 nonabelian gauge symmetry. He found that theExpand
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On the possibility of large axion decay constants
The decay constant of the QCD axion is required by observation to be small compared with the Planck scale. In theories of `natural inflation' and certain proposed anthropic solutions of theExpand
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Branes from matrices
Abstract Various aspects of branes in the recently proposed matrix model for M-theory are discussed. A careful analysis of the supersymmetry algebra of the matrix model uncovers some central changesExpand
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AdS Dynamics from Conformal Field Theory
We explore the extent to which a local string theory dynamics in anti-de Sitter space can be determined from its proposed Conformal Field Theory (CFT) description. Free fields in the bulk areExpand
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A Model for High Energy Scattering in Quantum Gravity
We present a model for high energy two body scattering in a quantum theory of gravity. The model is applicable for center of mass energies higher than the relevant Planck scale. At impact parametersExpand
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Constraints on string vacua with spacetime supersymmetry
Abstract We examine the consequences of extended spacetime supersymmetry for classical superstring vacua with four dimensions uncompactified. N = 2 spacetime supersymmetry implies that the “internal”Expand
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