INVESTIGADORES
LUGO Adrian Rene
artículos
Título:
Exact monopole instantons and cosmological solutions in string theory from Abelian dimensional reduction
Autor/es:
ADRIAN R. LUGO
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 1997 vol. 55 p. 6394 - 6402
ISSN:
1550-7998
Resumen:
We compute the exact string vacuum backgrounds corresponding to the
noncompact coset theory SU(2,1)/SU(2). The conformal field theory
defined by the level k=4
results in a five-dimensional singular solution that factorizes in an
asymptotic region as the linear dilaton solution and an S3
model. It presents two Abelian compact isometries that allow us to
reinterpret it from a four-dimensional point of view as a stationary and
magnetically charged space-time resembling in some aspects the
Kerr-Newman solution of general relativity. The k=13/7
theory, on the other hand, describes a cosmological solution that
interpolates between a singular phase at short times and an S1×S2 universe after some Planckian times.