FIZIKA B 15 (2006) 2, 5770
PLANE SYMMETRIC INHOMOGENEOUS BULK VISCOUS DOMAIN WALL IN LYRA GEOMETRY
ANIRUDH PRADHAN^{a }VANDANA RAI^{b} and SAEED OTAROD^{c}
^{a}Dept. of Mathematics, Hindu Postgraduate College,
Zamania232 331, Ghazipur, India
Email address: pradhan@iucaa.ernet.in,
acpradhan@yahoo.com
^{b}Department of Mathematics, Postgraduate College,Ghazipur233 001, India
Email address: vandana_rai005@yahoo.co.in
^{c}Department of Physics, Yasouj University,Yasouj, Iran
Email address: sotarod@mail.yu.ac.ir, sotarod@yahoo.com
Received 29 December 2005; Revised manuscript received 21 July 2006
Accepted 11 October 2006 Online 1 December 2006
Some bulk viscous general solutions are found for domain walls
in Lyra geometry in the plane symmetric inhomogeneous spacetime.
Expressions for the energy density and pressure of domain walls
are derived in both cases of uniform and time varying
displacement field b. The viscosity coefficient of bulk
viscous fluid is assumed to be a power function of mass density.
Some physical consequences of the models are also given. Finally,
the geodesic equations and acceleration of the test particle are
discussed.
PACS numbers: 98.80.k, 75.60.Ch
UDC 524.83
Keywords: cosmology, plane symmetric domain walls, bulk viscous model, Lyra geometry
