Tensionless p-branes with manifest conformal invariance

Tensionless p-branes with manifest conformal invariance

The quantization of the tensionless p-brane is discussed. Inspection of the constraint algebra reveals that the central extensions for the p-branes have a simple form. Using a Hamiltonian BRST scheme we find that the quantization is consistent in any space-time dimension while the quantization of the conformal tensionless p-brane gives a critical dimension d = 2. e-mail address:[email protected]...

BPS preons and tensionless super-p-branes in generalized superspace

Tensionless super–p–branes in a generalized superspace with additional tensorial central charge coordinates may provide an extended object model for BPS preons, i.e. for the hypothetical constituents of M–theory preserving 31 of 32 supersymmetries [18].

Tensionless Branes and Discrete Gauge Symmetry

We argue that the tensionless branes found recently on non-BPS D-branes using non-commutative field theory are in fact gauge equivalent to the vacuum under a discrete gauge symmetry. We also give a simple construction of the D(2p)-branes in IIA theory starting from a single non-BPS D9-brane. It has been shown recently that D-branes can be constructed as exact solitons in open string field theor...

Matrix model with manifest general coordinate invariance

We present a formulation of a matrix model which manifestly possesses the general coordinate invariance when we identify the large N matrices with differential operators. In order to build a matrix model which has the local Lorentz invariance, we investigate how the so(9, 1) Lorentz symmetry and the u(N) gauge symmetry are mixed together. We first analyze the bosonic part of the model, and we f...

Conformal p-branes as a source of structure in spacetime.