Modify your computer program from Ex. 5.17 to deal with the 2-dimensional Ising model augmented by an externally imposed, uniform magnetic field [Eqs. (5.80)]. Compute the magnetization and the magnetic susceptibility for wisely selected values of m_oB/J and K = J/(k_BT ).

Data from Exercises 5.17

Write a simple computer program to compute the energy and the specific heat of a 2-dimensional Ising lattice as described in the text. Examine the accuracy of your answers by varying the size of the lattice and the number of states sampled.

N N En=Ess; i>j j=1 N Mn=mo Es; 'n j=1 (5.80a)