16 research outputs found
Super Black Hole from Cosmological Supergravity with a Massive Superparticle
We describe in superspace a classical theory of two dimensional
cosmological dilaton supergravity coupled to a massive superparticle. We give
an exact non-trivial superspace solution for the compensator superfield that
describes the supergravity, and then use this solution to construct a model of
a two-dimensional supersymmetric black hole.Comment: 7 pages, Late
Prepotentials for (2,2) Supergravity
We present a complete solution of the constraints for two-dimensional, N=2
supergravity in N=2 superspace. We obtain explicit expressions for the
covariant derivatives in terms of the vector superfield and, for the two
versions of minimal (2,2) supergravity, a chiral or twisted chiral scalar
superfield .Comment: 16 pages, BRX-TH-36
Superspace Measures, Invariant Actions, and Component Projection Formulae for (2,2) Supergravity
In the framework of the prepotential description of superspace
two-dimensional supergravity, we discuss the construction of invariant
integrals. In addition to the full superspace measure, we derive the measure
for chiral superspace, and obtain the explicit expressions for going from
superspace actions to component actions. We consider both the minimal
and the extended theories.Comment: 22 pages, Late
Supergravity from a Massive Superparticle and the Simplest Super Black Hole
We describe in superspace a theory of a massive superparticle coupled to a
version of two dimensional N=1 dilaton supergravity. The (1+1) dimensional
supergravity is generated by the stress-energy of the superparticle, and the
evolution of the superparticle is reciprocally influenced by the supergravity.
We obtain exact superspace solutions for both the superparticle worldline and
the supergravity fields. We use the resultant non-trivial compensator
superfield solution to construct a model of a two-dimensional supersymmetric
black hole.Comment: Latex, 27 pages, minor typos corrected and reference adde
OPE's and the Dilaton Beta-Function for the 2-D N=1 Supersymmetric Non-Linear -Model
Using the superspace formalism, we compute for the two-dimensional N=1
supersymmetric non-linear -model, the order
(three-loop) correction to the central charge via the operator
product expansion of the supercurrent with itself. The contribution vanishes,
in agreement with previous results obtained from the usual -model
-function approach.Comment: 10 pp. + 1 uuencoded figur