Recent content by bhaubhau

Could anyone suggest a book for studying lattice models. Especially xy and Heisenberg models.

I just searched for frustration. So you basically mean that the ground state for a triangular lattice does not have a unique ground state. Hence non zero entropy. Interesting. Is that because the hamiltonian for the ground state can be written in more than one ways?

would it work the same way for a d-dimensional lattices as well? wht kind of variable would i choose for nearest and next nearest neighbor interactions? I am pretty confused! This does seem simple but I can't understand this physically at all.

I was trying to understand why for every spin configuration of a ferromagnetic system, there exists a corresponding isoenergetic state of an antiferromagnetic system. Can I treat an antiferromagnetically coupled 1-D ising model as a combination of two interpenetrating sublattices which are...

got it Cant stop laighing at myself.

Homework Statement H=H_{0} -g\muSB H_{0} = hamiltonian in absence of field S=Spin operator in the direction of the fied (say along z-axis) show that 1) M=1/\beta (dLn Z/ dB) 2) \chi = \beta(g \mu)^{2} <(S-<S>)^{}2> Dont know why it shows\mu in superscript. It isn't meant to be...