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Structure factor of dilute ring polymers
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We consider ring polymers in good solvents in the dilute limit. We determine the structure factor and the monomer-monomer distribution function. We compute accurately the asymptoti…
Critical structure factors of bilinear fields in O(N)-vector models
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
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 me…
Spectrum of confining strings in SU(N) gauge theories
Luigi Del Debbio, Haralambos Panagopoulos, Paolo Rossi +1
We study the spectrum of the confining strings in four-dimensional SU(N) gauge theories. We compute, for the SU(4) and SU(6) gauge theories formulated on a lattice, the string tens…
Spectrum of k-string tensions in SU(N) gauge theories
L. Del Debbio, H. Panagopoulos, P. Rossi +1
We compute, for the four-dimensional SU(4) and SU(6) gauge theories formulated on a lattice, the string tensions sigma_k related to sources with Z_N charge k, using Monte Carlo sim…
Critical exponents and equation of state of the three-dimensional Heisenberg universality class
M. Campostrini, M. Hasenbusch, A. Pelissetto +2
We improve the theoretical estimates of the critical exponents for the three-dimensional Heisenberg universality class. We find gamma=1.3960(9), nu=0.7112(5), eta=0.0375(5), alpha=…
Irrelevant operators in the two-dimensional Ising model
Michele Caselle, Martin Hasenbusch, Andrea Pelissetto +1
By using conformal-field theory, we classify the possible irrelevant operators for the Ising model on the square and triangular lattices. We analyze the existing results for the fr…
Chiral exponents in frustrated spin models with noncollinear ordering
Andrea Pelissetto, Paolo Rossi, Ettore Vicari
We compute the chiral critical exponents for the chiral transition in frustrated two- and three-component spin systems with noncollinear order, such as stacked triangular antiferro…
k-string tensions in SU(N) gauge theories
Luigi Del Debbio, Haralambos Panagopoulos, Paolo Rossi +1
In the context of four-dimensional SU(N) gauge theories, we study the spectrum of the confining strings. We compute, for the SU(6) gauge theory formulated on a lattice, the three i…
Large-n Critical Behavior of O(n)xO(m) Spin Models
Andrea Pelissetto, Paolo Rossi, Ettore Vicari
We consider the Landau-Ginzburg-Wilson Hamiltonian with O(n)x O(m) symmetry and compute the critical exponents at all fixed points to O(n^{-2}) and to O(ε^3) in a ε=4-d expansion.…
Crossover phenomena in spin models with medium-range interactions and self-avoiding walks with medium-range jumps
S. Caracciolo, M. S. Causo, A. Pelissetto +2
We study crossover phenomena in a model of self-avoiding walks with medium-range jumps, that corresponds to the limit of an -vector spin system with medium-range intera…