منابع مشابه
Thin Domain Walls in Lyra Geometry
This paper studies thin domain walls within the frame work of Lyra Geometry. We have considered two models. First one is the thin domain wall with negligible pressures perpendicular and transverse direction to the wall and secondly, we take a particular type of thin domain wall where the pressure in the perpendicular direction is negligible but transverse pressures are existed. It is shown that...
متن کاملPlane Symmetric Domain Wall in Lyra Geometry
In this paper general solutions are found for domain walls in Lyra geometry in the plane symmetric spacetime metric given by Taub. Expressions for the energy density and pressure of domain walls are derived in both cases of uniform and time varying displacement field β. It is also shown that the results obtained by Rahaman et al [IJMPD, 10, 735 (2001)] are particular case of our solutions. Fina...
متن کاملPlane Symmetric Inhomogeneous Bulk Viscous Domain Wall in Lyra Geometry
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 β. The viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density. Some physical consequences of ...
متن کاملSpinorial Field and Lyra Geometry
The Dirac field is studied in a Lyra space-time background by means of the classical Schwinger Variational Principle. We obtain the equations of motion, establish the conservation laws, and get a scale relation relating the energy-momentum and spin tensors. Such scale relation is an intrinsic property for matter fields in Lyra background.
متن کاملOn the Geometry of Planar Domain Walls
The Geometry of planar domain walls is studied. It is argued that the planar walls indeed have plane symmetry. In the Minkowski coordinates the walls are mapped into revolution paraboloids. pacs numbers: 04.20.Jb, 04.20.Gz, 98.80.Cq, 11.27.+d. Internet: [email protected] Internet: [email protected] 1 Domain walls are objects formed in the early stages of the evolution of the Universe [1] and have been stu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2006
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-006-9063-6