## Essential Statistical Physics Typos and Corrections

** Page 1, Sec. 1.1 ** The heat capacity for argon and oxygen should be the heat capacity **per molecule**

** Page 11, Sec. 1.2.4 ** "Hence the variance in the distance travelled in the walk ..." should read "Hence the variance in the **displacement** of the walk ..."

** Page 21, Sec. 1.5 ** "In systems with many macroscropic degrees of freedom ..." should read "In systems with many **microscopic** degrees of freedom ..."

** page 22, Prob 1.4 ** Typo: "indvidual" should read "individual

** page 27, Eq. (2.7) ** The argument of Ω_{1} is U_{1} and the argument of Ω_{2} is U_{2}

** Page 30, Sec. 2.1.3 ** The expression for the multiplicity function Ω(U) assumes that the density of states g(U) doesn't change
appreciably over the energy window δ U

** Page 39, Prob. 2.9 a) ** Ω(N,n) should be given by Ω(N,n) = ^{(N+n-1)!}⁄_{(N-1)!n!}

** Page 47, Prob. 3.2 ** There is a missing "m" in the Hamiltonian, it should be H = ^{p2}⁄_{2m} +
^{1}⁄_{2}mω^{2}x^{2}

** Page 75, Sec. 4.5.4 ** ΔS_{1} = ΔS_{2} only if g_{s}^{A} = g_{s}^{B}
and n_{Q}^{A} = n_{Q}^{B}

** Page 85, Prob. 4.19 ** Ortho and para were switched. For para hydrogen the spins are in a triplet state and for ortho hydrogen the spins are
in a singlet state

** Page 87, Sec. 5.1.1 ** There is a repeated "is" on the line above Eq. (5.4). The second "is" should be omitted

** Page 93, Eq. (5.27) ** The sum over i on the right hand side of the equation should be a sum over j.

** Page 97, Eq. (5.45) ** The α in the bracket should be replaced by α⁄m

** Page 105, Prob 5.6 ** "The number of molecules in a fluid crossing a surface of unit area ..." should read "The number of molecules in a fluid crossing a surface of unit area ** per unit time ** ..."

** Page 111, Eq. (6.21) ** The upper limits on the sums over N should strictly be N_{0} to be consistent with Sec. 6.1. We have sent N_{0} to ∞

** Page 120, Eq. (6.71) ** n_{q}^{i} should read n_{Q}^{i}

** Page 143, Sec. 8.1.2 ** In the discussion below Eq.(8.20), "odd" terms refer to those in which n is even, i.e. (n+1) is odd, and "even" terms refer to those in which n is odd, i.e.
(n+1) is even. This was a confusing choice of wording

** Page 145, Eq. (8.34) ** ε should read ε_{s} in the first line of the equation

** Page 148, Eq. (8.53) ** There should be no f_{0}(ε) term in the equation

** Page 198, Fig. 10.3 ** The label on the y-axis should actually read "tanh(zβJm)"