FIZIKA B 16 (2007) 4, 205222
MAGNETIZED STRING COSMOLOGICAL MODEL IN CYLINDRICALLYSYMMETRIC
INHOMOGENEOUS UNIVERSE WITH VARIABLE COSMOLOGICAL TERM L
ANIRUDH PRADHAN
Department of Mathematics, Hindu PostGraduate College, Zamania232 331, Ghazipur, India
Email addresses: pradhan@iucaa.ernet.in, acpradhan@yahoo.com
Received 25 October 2007; Accepted 5 December 2007
Online 15 February 2008
Cylindricallysymmetric inhomogeneous magnetized string cosmological model is
investigated with cosmological term L varying with
time. To get the deterministic solution, it has been assumed that the expansion
(q) in the model is proportional to the eigenvalue
s^{1}_{ 1} of the shear tensor s^{i}_{ j}.
The value of cosmological constant for the model is found to be small and
positive which is supported by the results from recent supernovae Ia
observations. The physical and geometric properties of the model are also
discussed in the presence and absence of magnetic field.
PACS numbers: 98.80.Cq, 04.20.q, 98.80.Es
UDC 524.83
Keywords: strings, inhomogeneous universe, cylindrical symmetry, variable cosmological term
