Update bosonic_exchange.cpp

updated documentation of reduced/physical beta convention

src/REPLICA/bosonic_exchange.cpp

@@ -381,16 +381,15 @@ void BosonicExchange::spring_force_interior_bead(double **f) const
 
 double BosonicExchange::prim_estimator()
 {
-  // In the "reduced-beta convention" [e.g. in J. Chem. Phys. 133, 124104 (2010); also J. Chem. Phys. 74, 4078-4095 (1981)],
+  // In the "reduced-beta convention" [e.g., in J. Chem. Phys. 133, 124104 (2010); also J. Chem. Phys. 74, 4078-4095 (1981)],
   // the Boltzmann exponents have the form exp[-(beta/P)H], where H is the classical Hamiltonian of the
   // ring polymers. This results in a canonical distribution at P times the physical temperature.
-  // In contrast, the "physical-beta convention" [e.g. in J. Chem. Phys. 99, 2796-2808 (1993)] uses weights of the form exp(-beta*H),
+  // In contrast, the "physical-beta convention" [e.g., in J. Chem. Phys. 99, 2796-2808 (1993)] uses weights of the form exp(-beta*H),
   // such that the temperature of the canonical ensemble coincides with the physical temperature.
   // Notably, the classical Hamiltonians of the two conventions differ, with the spring constant
   // in the reduced-beta convention being P times larger than that in the physical-beta convention. Additionally, the reduced-beta convention
   // lacks a 1/P prefactor in front of the external potential. The Hamiltonians of the two conventions are related through
-  // H_physical = H_reduced / P. Note however that the expressions for the various estimators are unaffected by this choice,
+  // H_physical = H_reduced / P. The code below was designed to be compatible with both conventions,
-  // so as the algorithm for bosonic exchange. The code below was designed to be compatible with both conventions,
   // and the choice of convention only affects a single calculation within it.
   // Setting the following boolean variable to false amounts to adopting the reduced-beta convention.
   double convention_correction = (physical_beta_convention ? 1 : 1.0 / np);