Griffiths Inequalities for some O(n) Classical Spin Models with $n\ge 3$

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38691The first and second Griffiths inequalities are proved for some classical O($n$)-invariant spin models (including Euclidean quantum field theories) for any $n$. The proof assumes a certain condition on an integral transform of the measure. Some examples are discussed.Some minor errors in appendix corrected, other typos fixed. Still latex, 11 pages, no figuresHigh Energy Physics - LatticeStatistical MechanicsHigh Energy Physics - TheoryMathematical PhysicsGriffiths Inequalities for some O(n) Classical Spin Models with $n\ge 3$text