Lagrangian theory of constrained systems: Cosmological application
نویسندگان
چکیده
منابع مشابه
Gauge Independent Lagrangian Reduction of Constrained Systems
A gauge independent method of obtaining the reduced space of constrained dynamical systems is discussed in a purely lagrangian formalism. Implications of gauge fixing are also considered. On leave of absence from S.N.Bose National Centre for Basic Sciences, Calcutta, India. E-mail: [email protected]
متن کاملCosmological status of Lagrangian theory of density perturbations
We show that hydrodynamical and field approaches in theory of cosmological scalar perturbations are equivalent for a single medium. We also give relations between notations introduced by V. Lukash, J. Bardeen, J. Bardeen et al. and G. Chibisov and V. Mukhanov. PACS: 98.80.-k, 98.62.Ai e-mail: [email protected]
متن کاملLagrangian theory of structure formation in pressure–supported cosmological fluids
The Lagrangian theory of structure formation in cosmological fluids, restricted to the matter model “dust”, provides successful models of large–scale structure in the Universe in the laminar regime, i.e., where the fluid flow is single–streamed and “dust”–shells are smooth. Beyond the epoch of shell–crossing a qualitatively different behavior is expected, since in general anisotropic stresses p...
متن کاملPhase space geometry for constrained lagrangian systems
We study geometry of the phase space for finite dimensional dynamical systems with degenerate Lagrangians. The Lagrangian and Hamiltonian constraint formalisms are treated as the different local-coordinate pictures of the same invariant procedure. The invariant description is given in terms of geometrical objects associated with the structure of foliation on the phase space.
متن کاملConstrained Quadratic Optimization: Theory and Application for Wireless Communication Systems
The suitability of general constrained quadratic optimization as a modeling and solution tool for wireless communication is discussed. It is found to be appropriate due to the many quadratic entities present in wireless communication models. It is posited that decisions which affect the minimum mean squared error at the receiver may achieve improved performance if those decisions are energy con...
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: Il Nuovo Cimento B Series 11
سال: 1994
ISSN: 1826-9877
DOI: 10.1007/bf02722837