10 research outputs found
N=1, D=10 Tensionless Superbranes I
We consider a model for tensionless (null) super p-branes in the Hamiltonian
approach and in the framework of a harmonic superspace. The obtained algebra of
Lorentz-covariant, irreducible, first class constraints is such that the BRST
charge corresponds to a first rank system.Comment: 10 pages, LaTeX, no figure
The Mass Spectrum of the 2-dimensional Conformal String
We present the mass spectrum of the tensionless string in 2 dimensions where
it has been found that the space time conformal symmetry survives quantization.
A BRST treatment of the physical states reveals that the string collapses into
a massless particle, a result which agrees with the classical treatment.Comment: 18 pages, latex, no figure
Null Branes in String Theory Backgrounds
We consider null bosonic p-branes moving in curved space-times and develop a
method for solving their equations of motion and constraints, which is suitable
for string theory backgrounds. As an application, we give an exact solution for
such background in ten dimensions.Comment: 11 pages, LaTeX. Final version, to appear in Phys. Rev.
Hamiltonian BRST Quantization of the Conformal String
We present a new formulation of the tensionless string () where the
space-time conformal symmetry is manifest. Using a Hamiltonian BRST scheme we
quantize this {\em Conformal String} and find that it has critical dimension
. This is in keeping with our classical result that the model describes
massless particles in this dimension. It is also consistent with our previous
results which indicate that quantized conformally symmetric tensionless strings
describe a topological phase away {}from . We reach our result by
demanding nilpotency of the BRST charge and consistency with the Jacobi
identities. The derivation is presented in two different ways: in operator
language and using mode expansions. Careful attention is payed to
regularization, a crucial ingredient in our calculations.Comment: 33pp (LaTeX), USITP-94-0