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, 2001

"... We compute the two-point correlation functions of general quadratic operators in the high-temperature phase of the three-dimensional O(N) vector model by using field-theoretical methods. In particular, we study the smalland large-momentum behavior of the corresponding scaling functions, and give gen ..."

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We compute the two-point correlation functions of general quadratic operators in the high-temperature phase of the three-dimensional O(N) vector model by using field-theoretical methods. In particular, we study the smalland large-momentum behavior of the corresponding scaling functions, and give general interpolation formulae based on a dispersive approach. Moreover, we determine the crossover exponent φT associated with the traceless tensorial quadratic field, by computing and analyzing its six-loop perturbative expansion in fixed dimension. We find: φT = 1.184(12), φT = 1.271(21), and φT = 1.40(4) for N = 2,3,5 respectively.

### unknown title

, 2004

"... Preprint typeset in JHEP style- HYPER VERSION The finite-temperature chiral transition in QCD with adjoint fermions ..."

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Preprint typeset in JHEP style- HYPER VERSION The finite-temperature chiral transition in QCD with adjoint fermions