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FIZIKA B 15 (2006) 2, 57-70
 
PLANE SYMMETRIC INHOMOGENEOUS BULK VISCOUS DOMAIN WALL IN LYRA GEOMETRY
ANIRUDH PRADHANa VANDANA RAIb and SAEED OTARODc
aDept. of Mathematics, Hindu Post-graduate College,
Zamania-232 331, Ghazipur, India
E-mail address: [email protected],
[email protected]
bDepartment of Mathematics, Post-graduate College,Ghazipur-233 001, India
E-mail address: [email protected]
cDepartment of Physics, Yasouj University,Yasouj, Iran
E-mail address: [email protected], [email protected]
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
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