Question 705063
SCQHARD
Five classical spins are placed at the vertices of a regular pentagon. The Hamiltonian of the system is where and the sum is over all possible nearest neighbour pairs. The degeneracy of the ground state is
(A)
8
(B)
5
(C)
4
(D)
10
Detailed Solution
By calculating the energy for all possible configurations of the five spins , we find that there are 10 states that yield the minimum energy .
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