Physics (PHY): Recent submissions
Now showing items 221-240 of 763
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Effects of disorder on interacting fermionic systems in one dimension
The work begins with constructing an XXX matrix whose diagonal elements represent the momenta of a classical NNN-particle system, while off-diagonal elements are odd functions of coordinates. Summing over rows of this ... -
Ground states, excitations, thermodynamics and exact results in various lattice systems
This thesis covers problems in a few different aspects of interacting many-particle systems on a lattice. The first problem is of a quantum dynamical system, and the rest are of quantum and classical magnetic systems. We ... -
Investigations concerning special critical points in multicomponent liquid mixtures
The key results of the present investigations [4] can be summarized as follows: Water behaves as a field variable and hence, as an effective substitute for pressure in exploring the coexistence surface of the system ... -
Pulsed neclear magnetic resonance investigations of certain proton conductors
In conclusion, we have assembled a pulsed field gradient spin-echo NMR spectrometer by interfacing a home-built microprocessor-based pulsed programmer and data acquisition system with imported RF units and an electromagnet. ... -
Equilibrium and nonequilibrium dynamics of dense liquids
Dense liquids do many interesting things: they freeze into crystals, and sometimes get trapped into glassy states along the way. Their behaviour becomes more unusual when they are driven far away from equilibrium, for ... -
Phasons,topological defects and dynamics in incommensurate matter
In this thesis, we derive some physical consequences of the existence of a phason mode in incommensurate materials. We consider two main examples of such materials-quasicrystals and the incommensurate twist grain boundary ... -
Studies of the vibrational and magnetic properties of layered compounds
In this final and concluding chapter, we summarize the important observations presented in the previous chapters and discuss the scope of future work in the systems under study. The main points dealt with in this thesis ...